what colors does the mineral quartz com in?
153831
Pure quartz is clear and translucent, but natural quartz is typically tainted with impurities, and it takes on the color of those. Here are some examples:\n\n# Amethyst's color is due to an iron (ferric, Fe+3) impurity-induced color center\n# Citrine's color is due to an iron (ferrous, Fe+2) impurity-induced color center\n# Milky quartz's color is due to microscopic air, carbon dioxide, or water inclusions\n# Rose quartz's (crystalline) color is due to aluminum and phosphorus impurities - massive rose quartz's color is due to microscopic and, as yet, unidentified dumortierite-like fibers\n# Smoky quartz's color is due to an aluminum impurity-induced color center aided by natural irradiation
150219
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
1176992
It has to do with the depth of the stone when found in the mine. Blue to green would be from a specimen closer to the surface and the green to red is buried deeper within the earth. Of course light plays a roll in the color prism of the alexandrites.
1073633
i haven't heard of any but quartz is totally neutral so it's a pretty safe bet.
716416
the typical color is a beautiful,hue known,in fact,as emerald  green and its due to traces of chromium in the crystal structure\nbut they can be light or dark green,bright green or leaf green.The\nvitreous luster its not outstanding,and is strongest in medium-light stones with few inclusions.ALL emerald contain inclusions,\nalthough in THE BEST quality stones,these are very faint and not visible to the naked eye.They show up under a 10x,20x or 40x lens.\nthe most common shape for gems is the STEP or TRAP CUT,which is also known as the EMERALD CUT.\nBy the way Colombia is the number one source of high quality emeralds (Chivor and Muzo mines)the biggest and most beautiful emeralds come from this mines.\n about the value ,stones of fine color,weighing more than 2 carats\nare among the most highly valued gemstones,and their price \nmay equal or exceed that of diamonds.less ideally colored varieties--TOO DARK OR TOO PALE--are worth quite a lot less;\nand if they are slightly turbid as well,the value is reduced even further
866818
Many minerals glow or fluoresce under different sorts of light. \n\nCertain types of calcite will glow under ultraviolet light. \nYou need to do a google search on FLUORESCENT MINERALS and all will then be revealed. \n\nHope this helps.
400219
Well, it won't be easy.  The two differ only in one way: Spessatite has Mn, while Hessonite (which is a subtype of grossular) has Ca.  The colours are also similar: Spessatite is ususally deep red but may also be black to orange, dark pink, or brown.  Grossular/Hessonite is more likely to be nearly colourless to green, yellow, pink, or brown.\n\nThe best way to tell them apart may be by the assemblage in which they occur.  Hessonite tends to be more commonly associated with skarns and other metamorphosed carbonate-bearing rocks, and is usually associated with calcite, dolomite, wollastonite, tremolite, and epidote.  Spessatite on the other hand tends to more commonly occur in granites, pegmatites, and other felsic igneous rocks, and in Mn-rich metamorphic rocks.\n\nThe only sure way to tell though would be to put them on a microprobe to find out.\n\nGood luck!
792508
Sagittarius Birthstones\n(Nov. 23-Dec. 21)\n Topaz - Amethyst, Ruby, Sapphire, TurquoiseYellow Topaz is the modern November birthstone and blue topaz is the Modern December birthstone. Topaz is the accepted gem for the fourth, 19th and 23rd wedding anniversaries. See other December and November birth stones:  Traditional, Contemporary, Mystical, Ancient, Zodiac and Star signs.\n\nTopaz is found in a variety of colors including: brown, red, orange, pink, sherry, yellow as well as colorless. Imperial Topaz is used to denote a stone that is reddish orange. Green and blue topaz are naturally very pale, they are often irradiated to produce more intense colors. \n\nSky Blue Topaz, Swiss Blue Topaz, London Blue Ttopaz are names used in the gem trades to refer to the depth of color. Sky Blue is the lightest while London Blue is the darkest blue. \n\nThe principal sources for topaz are Brazil, Sri Lanka, \nRussia, Australia, Africa, Mexico and Pakistan.
687420
Talc\nGypsum\nCalcite\nFluorite\nApatite\nFeldspar\nQuartz\nTopaz\nCorundum\nDiamond
948939
http://webmineral.com/data/Topaz.shtml\n\nthe site says its streak is white ..
147739
The two are very different minerals. \n\nGarnet describes a group of minerals, of the general formula of\nA3B2 (SiO4) 3  where A = Ca, Fe, etc, and B=Al, Cr, etc. Garnet comes in a variety of colors including red, black, brown, green, orange, pink, and colorless.  They are sometimes used as gemstones, but probably are more popular as a coating in high quality sandpaper and other abrasives. \n\nHere are some photos of different garnet minerals:\nhttp://www.galleries.com/minerals/silicate/garnets.htm\nTo see more data on the mineral properties go here:\nhttp://www.mindat.org/min-1651.html\n\nAquamarine is a blue gemstone variety of a mineral known as beryl. Beryl is Be3Al2Si6O18. Aquamarine and other varieties of beryl are much more popular as gemstones than garnet. Beryl also comes in green, blue, yellow, white, pink and other colors. Beryl is slightly harder than garnet with a rating 7.5 to 8 compared to 6.5 to 7.5 on Moh's scale of hardness. \n\nHere are pictures of beryls including aquamarine:\nhttp://www.galleries.com/minerals/silicate/beryl/beryl.htm\n\n\nHOOK 'EM HORNS!!!!
884509
http://www.galleries.com/minerals/elements/silicon/silicon.jpg\n\nits grey and shiny...not too exciting.
923334
Quartz is the mineral that has the best combination of durability and abundance, so much sand is quartz.  It is hard and common, so it must be a typical component of cement.
666767
Quartz itself does not contain metal. Quartz is a crystal. What you've found is not pure quartz if a metal detector is picking it up. It's mixed with a metal, and that could be anything, depending on where you live. It's probably iron, since that's a pretty common metal to find lying around (not in a pure form, of course).\nBut go ahead and smash them apart if you feel like it.  You might just find some reddish stuff (iron) or maybe you've gotten lucky and managed to find some quartz that fused with gold or something.
625568
it's a coarse grained light colored igneous rock
978391
It looks like an opal to me.  Check the hardness, if you can inscribe it with a steel knife it is softer than 6-7on the Moh's hardness scale, and probably an opal. if the blue mineral scatches glass it is harder than 5.
83712
http://en.wikipedia.org/wiki/Color\n\nThis might help out.