Green Turquoise

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Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium, with the chemical formula CuAl6 (PO4)4(OH) 8·4H2O. It is rare and valuable in finer grades and has been prized as a gem and ornamental stone for thousands of years owing to its unique hue. In recent times turquoise, like most other opaque gems, has been devalued by the introduction of treatments, imitations, and synthetics onto the market.

The substance has been known by many names, but the word turquoise was derived around the 16th century from the French language turquoise, for Central Asian material which was early imported through Turkey

Properties of turquoise

Even the finest of turquoise is fracturable, reaching a maximum hardness of just under 6, or slightly more than window glass. Characteristically a cryptocrystalline mineral, turquoise almost never forms single crystals and all of its properties are highly variable. Its crystal system is proven to be triclinic via X-ray diffraction testing. With lower hardness comes lower specific gravity (2.60–2.90) and greater porosity: These properties are dependent on grain size. The luster of turquoise is typically waxy to subvitre, and transparency is usually opaque, but may be semi translucent in thin sections. Color is as variable as the mineral’s other properties, ranging from white to a powder blue to a sky blue, and from a blue-green to a yellowish green. The blue is attributed to idiochromatic copper while the green may be the result of either iron impurities (replacing aluminium) or dehydration.

The refractive index (as measured by sodium light, 589.3 nm) of turquoise is approximately 1.61 or 1.62; this is a mean value seen as a single reading on a gemmological refractometer, owing to the almost invariably polycrystalline nature of turquoise. A reading of 1.61–1.65 (birefringence 0.040, biaxial positive) has been taken from rare single crystals. An absorption spectrum may also be obtained with a hand-held spectroscope, revealing a line at 432 nanometres and a weak band at 460 nanometres (this is best seen with strong reflected light). Under long wave ultraviolet light, turquoise may occasionally fluoresce green, yellow or bright blue; it is inert under shortwave ultraviolet and X-rays.

Turquoise is insoluble in all but heated hydrochloric acid. Its streak is a pale bluish white and its fracture is conchoidal, leaving a waxy luster. Despite its low hardness relative to other gems, turquoise takes a good polish. Turquoise may also be peppered with flecks of pyrite or interspersed with dark, spidery limonite veining.

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i bought this emerald or turquoise-green dress what do i match it with?

I NEED HELP BIG TIME I BOUGHT THIS TURQUOISE-GREEN/ EMERALD DRESS AND I DON’T KNOW WHAT COLOR SHOES AND ACCESSORIES TO BUY FOR IT I WAS THINKING BLACK OR GOLD BUT I DON’T KNOW AND I REALLY WANT TO IMPRESS THE GUY I LIKE WITH IT SO HELP ME!!

OMG
thats my favorite color:D
where classy white pearls like this

http://bethdevinedesigns.com/necklace_files3/PetalPearlNecklace2.jpg

With some shoes like so

http://www.jildorshoes.com/images/products/StuartWeitzmanSwoonBeigePat_Front_300.jpg

OR

http://images.boohoo.com/assets/uploads/product_large/AZZ94368WHITE_LARGE.1241537321.jpg

Then, im not sure how ur hair looks like; but trying makeing it curly like REALLY curly
Curls are really pretty
& good luck w| you know who;)

Green Turquoise & Navy Blue Makeup with White Liner Tutorial

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Green Copper Turquoise Gemstone sterling silver Plated Pendant Necklace gi113 $0.99

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Lifefactory Glass Beverage Bottle Lifefactory creates innovative, non-toxic products that make it easy to lead a healthy and eco-conscious lifestyle. They fuse modern sensibility, eco-friendly composition, and exceptional utility to produce a glass beverage bottle that is free of known harmful chemicals such as BPA, phthalate, PVC, and polycarbonate. All materials are FDA approved. The unique patent pending silicone sleeve is free…

Japanese Kosui Turquoise Green Six Piece Sushi Plate Set For Two $28.42 Beautiful turquoise green glazed sushi set makes your sushi to go look like you made it yourself. Makes a terrific gift….

KitchenAid Teakettle Porcelain Enamel on Steel Globe Kettle, 2-Quart,Turquoise $29.00 This 2 quart teakettle features a convenient squeeze and pour handle for easy, one-handed operation. The whistle is loud and clear to alert you when water comes to a boil and has a removable lid for easy cleaning and filling. A beautiful and fun exterior adds a splash of color to your kitchen. Comfortable handle a thick handle arches high above the lid and provides a wide, comfortable grip, the co…

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Green Rolling Hills $14.98 …

Between Turquoise and Green (The Trip) $2.67 …

LRI FMW Photon Freedom LED Keychain Micro-Light, White Beam $7.25 ATTRIBUTES Batteries Included: Yes Bulb: LED White Finish: Black Material: Polyurethane Power Source: 2 x CR2016 Switch: Pressure Switch…

Set of 130 Sky Blue and Lime Green Polka Dots Circles Wall Decor Graphic Vinyl Lettering Mural Decal Stickers Kit Peel and Stick Appliques $13.99 **Please Note*** This is an original from WALL SAYINGS VINYL LETTERING. If you are not purchasing from WALL SAYINGS VINYL LETTERING then you are purchasing a knock off and we cannot guarantee the quality or accuracy of the product. This set of 130 Polka Dots includes one 12.5″ x 26″ sheet of 65 Sky Blue Polka Dots and one 12.5″ x 26″ sheet of 65 Lime Green Polka Dots as shown in the picture. The …

Fishy Towel Rack – Antique Turquoise Metal 30.5 $69.99 …

Lee Hiller Designs Batik Print – Turquoise Green Butterflies Batik – Coffee Gift Baskets – Coffee Gift Basket $44.99 Turquoise Green Butterflies Batik Coffee Gift Basket is measuring 9x9x4. Contains 15oz mug, BONUS free set of 4 coasters, biscotti and 5 blends of gourmet coffee. French Vanilla, Kenya AA, Decaf Colombian Supremo, Chocolate and Italian Roast Espresso elegantly presented in our signature black planet coffee gift box. A very nice and thoughtful gift for any occasion….