what are the similarities between garnet and aquamarine?
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Here's the pages with the info. You'll have to read fast. Don't wait so long next time. Good Luck!!\n\nhttp://mineral.galleries.com/minerals/gemstone/aquamari/aquamari.htm\n\nhttp://mineral.galleries.com/minerals/silicate/garnets.htm\n\nhttp://mineral.galleries.com/minerals/gemstone/class.htm
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http://www.waynesthisandthat.com/crystals.htm
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no a diamond is a type of rock.\n\na crystal is a type of glass.\n\nsimilar, but not quite the same.
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Tiger's Eye (Alexandrite)\nIt's cool the way the gem is one color is indoor light and another color in sunlight.
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Your nearest rainbow? Just kidding!\nTry this site: http://physics.nist.gov/PhysRefData/Elements/legend.html
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January  Garnet\nFebruary Amethyst\nMarch         Bloodstone or Aquamarine\nApril         Diamond\nMay         Emerald\nJune         Pearl or Moonstone\nJuly         Ruby\nAugust         Sardonyx or Peridot\nSeptember Sapphire or Lapis Lazuli\nOctober Opal or Pink Tourmaline\nNovember Topaz or Citrine\nDecember Turquoise or Zircon
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http://www.acstones.com/gemofmonth/2001/gemofmonth.8.01.html
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It is a gemstone-quality transparent variety of beryl, having a delicate blue or blue-green color, suggestive of the tint of sea-water. It's closely related to the gem emerald.
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Peridot (pronounced "pear-uh-dot" or "pear-uh-doe", IPA: /pɛɹɪdɑːt/ or Fr. /peʁido/) is the gem quality variety of forsteritic olivine. The chemical composition of peridot is (Mg, Fe)2SiO4, with Mg in greater quantities than Fe. The name of the gemstone is believed to come from either the Arabic word faridat meaning "gem" or the French word peritot meaning "unclear." Peridot is one of the few gemstones that comes in only one color. The depth of green depends on how much iron is contained in the crystal structure, and varies from yellow-green to olive to brownish green. Peridot is also often referred to as "poor man's emerald". Olivine is a very abundant mineral, but gem-quality peridot is rather rare. Peridot crystals have been collected from iron-nickel meteorites.
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Yep, definitely cleavage (lol and you can describe how many directions the cleavage is in and whether it's 'perfect cleavage'... a great opportunity for geokes..)\n\nHardness is the resistance of the surface of the mineral to scratching, it's dependent on the crystal structure of the mineral, and usually expressed on 'Moh's Hardness Scale' - as a number from one to ten, one being lowest (talc, where talcum powder comes from, has a hardness of 1; diamond has a hardness of 10)\n\nThe streak is the colour of the mineral when powdered (it is useful in identifying minerals as it is a more constant property than colour - the slightest difference in trace element chemistry might have a huge effect on colour, hence all the diff varieties of quartz...). Streak is usually found by scratching the mineral along an unglazed piece of porcelain.\n\nFracture is the way a mineral breaks when it doesn't break along a plane (flat surface).
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An ore has minerals or metals suspended in a base, unwanted material that needs to be refined to make the pure mineral or metal usable.\n\nA gem is a crystaline material that has some intrinsic value.
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sapphire=zafiri\nblue eyed=galanomatis \nsapphire eyes=zafirenia matia
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1.Color - Blue, pink, yellow, green, white, and parti-color\n2.Size - varies\n3.Luster - Vitreous\n4.hardness - 9.0 (Mohs)\n5.Where it's found - Sri Lanka, Thailand, Burma, Cambodia, Nigeria, Madagascar and Australia.\n6.What people use it for - gemstone, laser, watch faces, etc.\n\ncheck flikr.com for pictures.
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Synthetic boules have been available since the 1890's (the reason sapphire/ruby synthesis was originally attempted).  There books by John Sinkankas which address this topic, the primary answers being color, orientation, appearance under magnification.  Any decent rock show will have people who can id it by sight, check this link for the nearest one.\n\nhttp://www.rockhounds.com/rockshop/table.shtml\n\nAny competent jeweler, without a financial incentive, should be able to tell you this.  I would be sure they are GIA certified in colored stones, or simply contact the GIA itself:\n\nhttp://www.gia.edu/\n\nPrice and/or setting is no method of determining if a stone is natural or not, in that even major retailers are selling fakes at full price these days.
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Peridot (pronounced pair-a-doe) is a transparent yellowish-green Magnesium/Iron Silicate. It is a gem variety of the mineral Chrysolite or Olivine and its chemical formula is given by: (Mg,Fe)2SiO4.\n\nPeridot ranges in color from light yellow-green to the intense bright green of new spring grass to olive. Because of the way peridot splits and bends the rays of light passing through it, it has a velvety appearance, a rich glow, and a slightly greasy luster. The purer green a peridot is the higher the value. Any tinges of brown or visible flaws greatly diminish the price. See jewelry made with peridot.\n\nThe best-colored peridot has an iron percentage of less than 15% and includes nickel and chromium as trace elements.bracelet It is not clear whether the word peridot comes from the Arabic word faridat, which means gem or if it is derived from the French word peritot which means unclear. In the 18th century,the French were the first to call this yellowish-green stone peridot. Before this time, peridot was called topaz. Peridot has been mined as a gemstone for an estimated four thousand years and is mentioned in the Bible under the Hebrew name of pitdah. \n\nThe second website listed belows shows sizes and typical prices.
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http://en.wikipedia.org/wiki/Crystal
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Calcite...my favorite mineral!!! (Calcium carbonate, get it?)\n\nHardness is the most obvious. Calcite is 3 on Moh's scale. Quite soft! and quartz is 7.\n\nA penny, a nail or knife, a glass plate, all will help you separate these two. The quartz will scratch everything there. \n\nOne more test, that I didn't put on your other list that is the best test here, the acid test. A dilute acid will fizz when applied to the calcite, while the quartz will not react at all. This is why all good geologists carry around a bottle of acid in the field. Quartz (sandstone) and calcite (limestone) can be deceptively similar in appearance. \n\nThese two are good examples of why you cannot rely on just color or shape. Both quartz and calcite come in a variety of colors, depending on the impurity, and both can be completely opaque.(Think of rose quartz, milky quartz, amethyst, etc, and realize that calcite has as much variety) Both can be very similar crystal shapes since they are both in the trigonal system. Both have a white streak. Both have a glassy (vitreous) luster. \nCalcite:\nhttp://webmineral.com/data/Calcite.shtml\nQuartz:\nhttp://webmineral.com/data/Quartz.shtml\n\nThere is one more online resource I think you should look at:http://www.mindat.org/\nWebmineral.com is better for the questions you have asked, but mindat.org is very comprehensive and will have photos of more variations of the minerals that might help you understand the challenge of picking which properties are best for which minerals. On a lab test, you may be given samples to test that you have never seen, and they may be minerals you have seen before but in a different form (yes- its a trick), so knowing your tests can save you.\n\nBy the way, I just noticed your question about why color should be used with caution for identifying minerals. I think this answer is a good example of that. Many minerals come in many different colors due to some small impurity in the mineral. Both quartz and calcite come in almost every color of the rainbow. Fluorite is another good example of a mineral that can come in many different colors. Other examples are the many copper compounds which come in various shades of blues and greens. Because there are so many different copper minerals with the same color you can't use the color as a diagnostic for any one of them.