08 X. There is currently a bug where the rock pile to extract the Heart of Mars spawns out of bounds, making the sidequest impossible to complete. 2% mitigation. Money Market story: iShares SP Mid-Cap 400 Growth ETF Shares Bought by Corundum Group Inc. Pavilion Facets. Cut P1 and P3 to centerpoint with a 600-grit lap. 14,393 citrine stock photos, vectors, and illustrations are available royalty-free. Brutal Shell – This is base-level mitigation for the Gunbreaker. Princess cut ruby gemstone on white background. Corundum was first publicly announced at the OptSys workshop at Sigcomm in August 2019 and published at FCCM in May 2020. Ideal Chemistry: Al 2 O 3. A continuous. Ruby ID: R11966 – Carat Weight: 0. It generates type `BuddyAlloc` which a persistent allocator type. Corundum is crystalline aluminum oxide, Al 2 O 3, second hardest on Mohs Scale, and one of the most popular (and expensive) of gem minerals. 6 percent), silicon (27. It also demonstrates that to obtain high-density corundum ceramics by this method, aqueous slips with a maximum alumina content of up to 80 wt. Natural mineral crystal red ruby. 1 to 1 m thick and 100 m long. As of 6. Value of Pinkish Rubies. I guess it just removes the skill from the spellbook, which isn't helping the hotbar issue. For example:It boasts strong mitigation with “Heart of Corundum,” which mitigates 30 percent damage and has free heal on it. The idea of covering hits by coating your body in crystals is so cool, it really makes me want a sort of geomancer tank. Huittinen 1University of Helsinki, Helsinki, Finland; 2Karlsruhe Institute of Technology, Karlsruhe, Germany In this study we investigated the potential. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. This is where shields are good, and the more %mit you stack, the better shields are. 1 2 Next. Use them in commercial designs under lifetime, perpetual & worldwide rights. New Gunbreaker Traits. Photo about Macro mineral stone Corundum in rock a white background close up. Moisture (ranged from 80. ; Corundum ore can be sold to Verner Rock-Chucker for the quest Mine Ore. It also has commercial purposes in jewelry, though what role corundum is used for depends on its quality. Princess cut ruby gemstone on white background. 5 and 4. Yeah it means paladins gain slightly more AoE damage but it would allow them to still use their damage buff without a target or when out of range. Corundum ruby mineral stone. Schmidt) Makino. Many people misunderstand the concept of this macro. Bartender4 - Highly customizable action bars which can be moved and organized however you like. Therefore, it lowers the risk of making mistakes. iStock Macro Mineral Raw Uncut Blue Sapphire Crystal Stock Photo - Download Image Now - Sapphire, Blue, Corundum Download this Macro Mineral Raw Uncut Blue Sapphire Crystal photo now. e. Here are some of the macros I have used for Restoration and Balance specs. Heart of Stone/Heart of Corundum - 15% DR when used. The most stable phase of α-Al 2 O 3 (corundum, sapphire) is an extremely important material due to its great hardness, high thermal. For everybody: Macros can be useful to queue actions when normal buffering is impossible. 49 wt. R11966 | medium. Your issue doesn't take into account that most people just don't use that macro, I think changing. After a small delay, your HP is reduced to 1 and you become impervious to essentially all attacks. All corundum varieties can function as healing stones. You can use light of elune if you're on global but you cannot use hearthstone while on global. Montepuez corundum deposits in the northeastern Mozambique are geologically linked to parts of Neoproterozoic Mozambique Belt collectively described as the Montepuez Complex, containing high-grade metamorphic rocks, belonging to amphibolite facies and including corundum-bearing and corundum-barren amphibolites. Weight: 1. As red gemstones, rubies inherently offer greater motivation, passion, and vitality. In bepaalde hoemannichte chromium okside wurdt tafoege yn it smelten proses, dat is ljocht pears of rose. ; Corundum ingots are one of multiple items needed at forges to create all varieties of banded iron, scaled, and steel plate armor. However, both of these properties are more useful in the field than in the jewellery store when it is actually OK to scratch the stone! Because corundum only occurs in specific rock types with specific other minerals, the geological setting can often rule out, or. Hollow tubes inside the gemstone can also qualify as needles too. First up, you need to obtain the Aquatic Shades, the toy used to uncover the next part of the secret. Aquamarine, blue topaz. How Heart of Corundum works is you gain three buffs: Heart of Corundum: 15% DR to self or party member for 8s; Clarity of Corundum: 15% DR to self or party member for 4s. 47 ct Corundum - Ruby Thailand (PDF) 35103 1. They can be formed out of all different types of crystals, though certain ones tend to be more common than others in corundum. 60 $ 67. 8% along the c- and a-axes, respectively). Sometimes a tank can have 10 buffs on him, the time I take to check if one is invul, the tank is absolutely dead if there was no invul. Diagnosing Macrocytosis. Balan: Theoretical infrared spectra of OH defects in corundum modify the OH-stretching frequency. Syntetic corundum mineral texture. Description: Faceted ruby gemstone, 6. Free or royalty-free photos and images. Here we use corundum to present a comprehensive quantitative description of the causes of color in a gem material and illustrate its predictive power. Hello everyone. the slight clipping i might get is. The term sapphire, when used without any modifiers, refers to only the blue variety of corundum. glamours using this piece. Features in the roadmap are broken down. One notable thing about quinoa is its protein content. Unlike sword skill,. Reprisal and Heart of Light are your raid mitigation abilities. Rosaline. It contains 0 bedroom and 0 bathroom. The way macros work, it'll read through the macro and execute it line by line, but because there are zero <wait> commands, it just blitzes through all the commands at once causing the macro to fail after Gnashing Fang if you only press it once. Pure corundum is rare in nature, and is completely colourless. Add to cart. % is required. Corundum definition: a common mineral, aluminum oxide, Al2O3, notable for its hardness: transparent varieties, as sapphire and ruby, are used as gems, other varieties as abrasives. See above for USDA hardiness. To explore the mechanism of Fe 2 O 3 and TiO 2 on corundum, the phase compositions of pure α-Al 2 O 3 and α-Al 2 O 3 doped with Fe 2 O 3 under the same process conditions were researched. Blacksmithing allows players to create various kinds of materials and equipment using materials acquired from mobs across all floors. Check prices and all shapes here! Our Products; FAQ; Sitemap;. 1. We demonstrate here that the existence of a hydrous, silicon-bearing, nanometer-thick layer (called “HSNL”) on the corundum. Corundum Value, Price, and Jewelry Information. Corundum’s energy is primarily linked to the Root, Heart, and Throat Chakras. Heart of Stone is another useful skill that can reduce damage taken, but this can also be applied to another party member. A macro value is a sequence of characters. I have a macro set for co-tank/mousover nascent flash/heart of corundum. Sweet Potatoes. hematite crystal stock pictures, royalty-free photos & images. The market value of corundum stood at an estimated 19. Schmidt. You should never use macros for anything other than putting important information into the party chat. < Heart of Corundum. Corundum is best known for its gem varieties, Ruby and Sapphire. [1] Other compounds, especially among the inorganic solids, exist in corundum structure, either in ambient or other conditions. . Museum of Mineralogy and Petrography, UAIC. Thus, every tank can use the same best-in-slot gear and melds. Download this Macro Stone Mineral Korundofillit Clinochlore Corundum On A White Background photo now. r. 75% mitigation. Gives target the exact shield from Brutal Shell. With the Heart Chakra, Corundum helps to open the heart to love and compassion, promoting emotional balance and. Corundum (Al x Ga 1− x ) 2 O 3 alloys have been proposed as a candidate ultrawide-bandgap oxide for a number of applications, but doping is unexplored. 2 Corundum Ct, Petaluma, CA. 1 B). Reduces damage taken by a party member or self by 15%. #62 opened on Jan 22, 2022 by Strayarctic. In the past it's also useful when hardcast raise with more than 1 dead to tell co-healer which one is for them, but with EW update add litte number icon for target, macro is no longer necessary. Corundum is colourless in its purest form, but traces of chromophores such as Fe, Cr, Ti, V, can colour corundum and form valuable gemstones of ruby and sapphire (Dubinsky et al. The Strix Scope II 96 may have a ridiculous name but it's still a dream to game and type on. The temperature ranges for the transition from brittle to ductile failure (900–1200°C) coincide for whiskers for macrocrystals. Ruby and Sapphire are scientifically the same mineral, but just differ in color. Passage of arms is likely still going to be the king of party support. Support Center Find answers to questions about products, access, use, setup, and administration. As the world’s largest producer of fused aluminium oxide-based products as well as the world leader in fused minerals for abrasives, we provide the right high-performance solutions for vitrified, resin-bonded and coated abrasives for all grinding, machining, blasting and cutting applications. I suspect similar things are for gnb. Other compounds, especially among the inorganic solids, exist in corundum structure, either in ambient or other conditions. Duration: 8s Additional Effect: When targeting a party member while under the effect of Brutal Shell, that effect is also granted to the target Duration: 30s Additional Effect: Grants Clarity of Corundum to target Action. Hey all, I was wondering if there’s a good macro that works well for off-tanking as well as main-tanking / solo. 3D Model NoAI. Only, the real Heart of the Ocean wasn't a blue diamond. I mean I say that for me but many people does not read the chat during dungeon XD. What is Gunbreaker's Playstyle? Gunbreaker is a high-tempo tank that builds and spends cartridges using its weaponskills and abilities. Shorter Names: Abbreviates location names. She is a robot girl who serves as the villainous harlequin of Creed Graphite's faction. Corundum is predicted to be the most abundant refractory circumstellar dust and has been suggested as a candidate emitting the 13 μm feature in infrared spectra of oxygen-rich asymptotic giant branch stars. Its. These cartridges can. 1 to 5 cm in size (figure 4). Natural corundum has six major chromophores that cause color: Cr 3+, h •-Cr 3+, Fe 3+, h •-Fe 3+, Fe 2+-Ti 4+, and V 3+. Holding ALT and then using numbers on the keypad will give you different results. It is recommended to alias the `BuddyAlloc` type for tidiness. Corundum is the name for a structure prototype in inorganic solids, derived from the namesake polymorph of aluminum oxide (α-Al 2 O 3 ). This ultimate macro calculator takes a complete and comprehensive look at your life to provide a personalized nutrition recommendation. PLD having 2 party mitigation cooldowns is just incredibly useful. Some corundum even owes its colour to irradiation, or the elements vanadium, cobalt or nickel. Maim and Mend II allows Umbral Ice to stack up to 3 times. Your issue doesn't take into account that most people just don't use that macro, I think changing. ruby in matrix from Madagascar isolated on white background. ; Nebula is your strong defensive cooldown. Cardiocrinum cordatum is a BULB growing to 1. 47 ct Corundum - Ruby Thailand (PDF) 35103 1. ⬤ Soot Black. Optional piece. Developers will see these issues during the design time. The “#showtooltip” line will ensure that the appropriate tooltip is displayed when mousing over an action bar button. The star you can see on some sapphires isn’t an illusion or a trick of the camera. From an isotopic point of view especially, hibonite is. About. e. 86 Heart of Corundum: GNB: 82 Ability Instant 25s 30y 0y Reduces damage taken by a party member or self by 15%. Nando’s chicken is grilled with the skin, but if you want to. and other headlines for Blackrock Funds - Please click here if you are not redirected within a few seconds. 22 ct. This page covers the rotation and action usage when leveling Gunbreaker to Level 90. Corundum is introduced in the story after Mysticete's rebirth, when Creed restores her functionality, alongside Chlorseraph. 1. Also gives the buffs "Clarity of Corundum" and "Catharsis. "Check out our corundum heart selection for the very best in unique or custom, handmade pieces from our gemstones shops. The aim of this study was to determine the chemical composition, minerals and antioxidants of heart of date palm from three Saudi cultivars. synthetic corundum mineral isolated on the white background (looks like meteor) Semi-precious gemstone. 1 percent). See images sardius stone stock video clips. %). Both sides work together to efficiently circulate the blood. I hadn't thought this through properly even though I have the same setup (and a similar Heart of Corundum macro, and Aurora macro, on my GNB). In the site map, in Advanced settings, select Agent experience. Nutrition Basics. 🅰️ The alpha release of the companion app is out! It's still pretty rough, but progress is happening!Corundum is a crystalline form of aluminium oxide (Al 2 O 3) typically containing traces of iron, titanium, vanadium, and chromium. All colors of corundum except red are known as sapphire. Leveling Rotations and Tips for Gunbreaker — Endwalker 6. 40, 2. Corundum grains, exclusively sapphires, were classified by trace-element signatures as magmatic and metamorphic types. The metastable paragenesis of corundum and quartz is rare in nature but common in laboratory experiments where according to thermodynamic predictions aluminum–silicate polymorphs should form. Has an additional effect: grants Clarity of Corundum to target, reducing. The corundum ranges in color from black to bluish gray and from 0. YoRHa Type-55 Thighboots of Fending. 1. Simply replace "Tank" with the name of the player you'd like to misdirect. Did you mean : conundrum. ucsd. Grants 1 stack of Umbral Heart, nullifying Astral Fire 's MP cost increase for Fire-aspected spells; Umbral Heart can be stacked up to 3 times. Aight quick scenario : Tank pulls everything, doesn't use anything outside 1 rampart, ends up dying. Our results have been combined smoothly with existing low-temperature. #61 opened on Jan 22, 2022 by gurkburk76. Corundum grains, exclusively sapphires, were classified by trace-element signatures as magmatic and. Additional Effect: When targeting a party. Corundum is a mineral that is primarily composed of aluminum oxide (Al2O3) and is one of the naturally occurring crystalline forms of aluminum oxide. 78 ct Corundum - Sapphire Myanmar. Red blood count indicators. 82) - Upgrades Heart of Stone to. closeup of sample of natural mineral from geological collection - rough Corundum rock on black granite background. J. The macro-crystalline minerals form large well-shaped crystals that are often transparent, while the micro-crystalline only form microscopic crystals and are always opaque. Second, you have shields/barriers, which put up a barrier worth a certain amount, and absorb that amount of damage. Corundum is a mineral distinguishable by its hardness, durability, and hexagonal barrel-shaped crystals. 5 wt % after 24 h of milling according to the energy-dispersive X. Sprint is an ability from Final Fantasy XIV that allows characters to run or swim faster. Use them in commercial designs under lifetime, perpetual & worldwide rights. 0. Activates the global cooldown. Weakness reduces strength, dexterity, intelligence, and mind by 25%. This calculator can provide a range of suggested values for a person's macronutrient and Calorie needs under normal conditions. Comparison with experimental data makes it possible to assign most of the narrow bands observed between 3150 and 3400 cm−1 in natural and Ti- or V-doped. %) is 377 GPa, the speed of sound is 10100 m/sec. '9 After the run, the spines were partly decomposed, frayed and disoriented. 🅰️ The alpha release of the companion app is out! It's still pretty rough, but progress is happening! macro mineral stone ruby on a white background close-up. ; The Immaculate Sac of Swog Treasures costs 1 Gold Coin. Methods: This cross-sectional study was conducted using data for 1,958 participants from the Northern Shanghai Study aged over 65 years without a history of. Reduces magic damage taken by self and party members by 10%. Sellers usually resort to this method when heat-treatment is ineffective. 71 billion U. Giuliani et al. Optional piece. Face-sharing octahedral units are isolated and enlarged (bottom). Heart of Stone Mastery upgrades Heart of Stone to Heart of Corundum. 80. Small amounts of metallic elements such as Cr, Fe and Ti can substitute for aluminum in the structure, which gives rise to many colour variations. 1, Living Dead and Blood Weapon have been changed respectively. if and when, how i use em on Playstation? Well I can think of a way. 01 Simple OxidesCorundum's hardness of 9 is distinct for this mineral, as is its hexagonal nature. Macro stone mineral Mookaite Jasper on a white background Macro stone mineral Mookaite. YoRHa Type-55 Thighboots of Fending. Ultra-high-performance steel-fibre-reinforced concrete (UHP-SFRC) is a technologically advanced composite with a high ability to absorb and dissipate mechanical energy. Hey all, I was wondering if there’s a good macro that works well for off-tanking as well as main-tanking / solo. Mouseovers Not Working on GNB Mitigation (Heart of Stone/Corundum, Aurora) #63 opened on Jan 26, 2022 by Axel-of-the-Key. In addition, the open porosity of the macro-porous mullite-corundum could be effectively tailored by choosing the KM/M mass ratio, the pore-former/M mass ratio and sintering temperature. C ORUNDUM. MacPherson, in Treatise on Geochemistry, 2007 1. I guess it just removes the skill from the spellbook, which isn't helping the hotbar issue. Enhanced Aurora allows for the accumulation of a second charge. Corundum-structured α-Ga 2 O 3 is mostly obtained on a sapphire (α-Al 2 O 3) substrate, and this is probably due to the similarity in lattice structure between the epilayer and the substrate, despite the lattice mismatch (3. Rossberg, J. I write macros for all of my passable skills (Cover, Nascent Flash, Heart of Stone/Corundum, etc. Crystal structure of Corundum. I hadn't thought this through properly even though I have the same setup (and a similar Heart of Corundum macro, and Aurora macro, on my GNB). glamours using this piece. Energy healers use ruby as a root chakra stone, establishing protection and security. It has no dominant cleavage and fractures in a conchoidal manner. I have basically the inverse macro when I'm on the WHM. Job Actions. In combat situations players will mostly interact with spells, weaponskills, and abilities. 2012. Corundum is colourless in its purest form, but traces of chromophores such as Fe, Cr, Ti, V, can colour corundum and form valuable gemstones of ruby and sapphire (Dubinsky et al. 458 E. Silky smooth switches and clever media keys make this the best gaming keyboard right. Ley Lines Black Mage 52 : Ability Job action: Effects Grants Ley Lines for 30 seconds, creating and maintaining a stationary area of effect; Standing within the area of effect grants Circle of Power, which reduces cast time, recast time, and auto-attack delay by 15%; Only the user can benefit from this area; InteractionsTreated gems give vendors more rubies to sell, and a better price for buyers. Inner Release. It is a rock-forming mineral. god forbid you catch me clicking my mt to use shirk on them during nm window. 01. Corundum (Al2O3) is made of aluminum and oxygen. . Heart of corundum isn't really any better than intervention or nascent flash from a support standpoint. As you will note in Figure 20. Blue sapphire isolated on white background, closeup and selective focus. We use synthetic samples doped with a single. The second made full use of Al 2 O 3, SiO 2 and TiO 2 in calcined bauxite, and Fe 2 O 3 was used as an additive. 08 barns/cc. You can use the macro symbol where you want the value to occur in the X++ code. Our products include: cubic zirconia (CZ), crystal, spinel, red and blue corundum, glass and so on with several of attractive colours. Traits. Counting macros can help you: Lose stubborn fat. Photo about Macro shooting of natural mineral rock specimen - rough Phlogopite stone with corundum crystal on dark granite background from Tajikistan. Resurrection is an Arcanist, Summoner, and Scholar spell from Final Fantasy XIV that revives a single ally in a weakened state. Rubies are specifically the red variety of corundum. The origin of their colour. Reticulocyte count. Image of ends, isolated, background - 211828250. The toy is a guaranteed drop from the Immaculate Sac of Swog Treasures, the best bag purchased from The Great Swog by a cave in the southeastern portion of Ohn'ahran Plains. One reason for this lack of success may be the high activation energy barrier(485 kJ mol−1), requiringtemperaturesThis article discusses the technological aspects of producing corundum boats and crucibles used for metal melting and material analysis by casting an aqueous slip in a plaster mold. In the PvP section, you will find information about its PvP. Warrior is also the tank with the best sustain, with a wide array of powerful self-healing abilities, along with the most powerful dungeon mitigation ability in the game,. ), but it's useful for invulns like Superbolide and Living Dead,. Sweet potatoes, in particular, are jam-packed with beta-carotene, which can support a healthy immune system. 00. Compared with sintered corundum without this additive, its microhardness is about 15%. Highly included corundum is typically used as an abrasive in products like sandpaper, nail files, belt sanders, etc. 3d illustration. 78 ct Corundum - Sapphire Myanmar. It’ll give the party member the same shield for 30 seconds. The volume of electron–matter interaction varies directly with the accelerating potential of the electron beam and inversely with the mean density of the sample. The face-sharing In cations in corundum are equivalent, but Zn and Sn in the. Corundum deposits in the Tan Huong–Truc Lau area of Vietnam are hosted mainly in gneiss and partly in feldspathic pegmatoid and marble. The mineral is widely known for its extreme hardness and for the fact that it is sometimes found as beautiful transparent. The sample is made up of numeral black & red Corundum crystals but there are two large ones that are prominent, they are shown in the image. This will make the cutting go faster. Plan your CDs accordingly. Yeah it means paladins gain slightly more AoE damage but it would allow them to still use their damage buff without a target or when out of range. I tried to copy and paste from a site on my bf's PS4, but pasting with Ctr + V didn't work. General Corundum Information : Chemical Formula: Al2O3 : Composition: Molecular Weight = 101. Requiescat would grant 25% increased damage in additional to what it currently does, and the damage dealt is instead a 5y AoE with 50% damage falloff beyond the first target. , 2020; Simonet et al. g. G. Dreamstime is the world`s largest stock photography community. LARGE crystals of corundum have been grown for many years by the flame-fusion process originated by Verneuil 1. Oxygen is blue, indium is yellow, tin is red, and zinc is green. Locality: Synthetic. If a rando healer is far more likely to panic heal, using bolide isn’t effective. Use the former against casted instances of heavy damage, and use the latter if you need to mitigate heavy raidwide magic damage. This paper analyses the effect of hollow corundum microspheres (HCM) on both physical-mechanical properties (density, ultrasonic pulse velocity, modulus of elasticity, and compressive strength) and thermal shock resistance behavior of refractory medium cement castable with bauxite aggregate. Ang Chrome corundum (kilala rin bilang pink corundum) ay gawa sa metallurgical grade na chrome green at industrial na alumina bilang hilaw na materyales, at may kemikal na reaksyon sa isang mataas na temperatura na higit sa 2000 degrees. This is mainly due to their natural abundance, high safety levels, and high energy density. Melee Mastery increases the potency of Keen Edge to 170, Brutal Shell to 120, and Solid Barrel to 120. And search more of iStock's library of royalty-free stock images that features Sapphire photos available for quick and easy download. For comparison, brown and white rice both contain about 4. Eibl, S. for lemon, was used as a generic name for many kinds of yellow stones including Beryls (Golden Beryl and Helidor), Corundum (yellow Sapphire), Quartz (modern Citrine. Generally speaking pinkish rubies will be less expensive than pure red rubies, which gives buyers a better range on. Hence, Option B is correct. Another smithing station can be found in the weapon store on floor 5. Corundum was also confirmed by X-ray analysis (Table 2). 0. More model information NoAI: This model may not be used in datasets for, in the development of, or as inputs to generative AI programs. Blackrock Funds story: iShares SP Mid-Cap 400 Growth ETF Shares Bought by Corundum Group Inc. Before healer even gets back in the same zone as the group, tank's already pulling again. They range in size from 2. Requiescat would grant 25% increased damage in additional to what it currently does, and the damage dealt is instead a 5y AoE with 50% damage falloff beyond the first target. Corundum may be defined as a mineral that is very hard and consists of aluminum oxide occurring in massive and crystalline forms, that can be synthesized, and is used for gemstones. Snoeren, George Porter, George Papen Department of Electrical and Computer Engineering University of California, San Diego fjforenci, snoeren, gmporter, gpapeng@eng. I guess it just removes the skill from the spellbook, which isn't helping the hotbar issue. Corundum-type In 2 O 3 was obtained by precipitation from the solution of indium nitrate in methanol by adding concentrated ammonia solution and subsequent. glamours using this piece. Ability. The smithing stations necessary for blacksmithing can be found in the crafting sector on floor 1, which is located on the right after going down the main stairs ahead of the teleporter. Knifepoint Mine. Expand. I hadn't thought this through properly even though I have the same setup (and a similar Heart of Corundum macro, and Aurora macro, on my GNB). The popular blue sapphire joins other blue gemstones in bringing serenity and mental clarity. Magnesium- and Fe3+-rich ilmenite, described as typical mantle-derived species, is the dominant heavy mineral in almost all alluvial. PEPA: Average grain size(μm) F 020: 850 – 1180: F 022: 710 – 1000: F 024: 600 – 850: F 030: 500 – 710: F. 26. Significantly increases enmity generation. Can't even pair with other defense cooldown because they are all mitigations that cannot stack. The ionic and covalent. It is hardy to UK zone 7 and is not frost tender. Something less consequential like Heart of Stone/Corundum or Reprisal while the weird blood botanist is flashing everyone is preferable. Corundum is, in fact, the 2nd hardest mineral: a 9 on the Mohs hardness scale (if I ever open a restaurant, I. ucsd. Sapphire is also only used to describe the gem. Ruby is red corundum; all other colors are Sapphire. It is a very hard mineral and is commonly used as an abrasive in various industrial applications.