NATURAL SKY BLUE TOPAZ Natural Cut Cushion shape in 17x17mm China Suppliers and wholesale.
COLOR: Natural Sky Blue Topaz is gentle sky blue color.
ORIGIN: Brazil, Sri Lanka, Madagascar, Myanmar, Pakistan, Russia, Nigeria, China, Australia, Japan, Mexico, South Africa, Scotland, Tasmania, Ireland and the U.S.
CHEMICAL COMPOSITION:Al2SiO4(F,OH)2 (aluminum, hydroxyl-flourine silicate)
CUT:Round, Baguette, Oval, Pear, Square, Emerald, Marquise, Trillion, Heart, Oval Cabochon, Round Cabochon
The following is the 17x17mm cushion shape in natural cut Aquamarine sky blue stone:
SPECIFIC GRAVITY: 2.64 – 2.65
REFRACTIVE INDEX: 1.610-1.630
HARDNESS: 8 on Mohs scale. Topaz is a hard and durable gemstone, and will not dissolve in most chemical solvents
Topaz is a fairly common and inexpensive gemstone. It can be found in huge and flawless crystals, which can be faceted into giant gemstones. Topaz crystals occur in highly acidic igneous rocks, such as rhyolite, and in metamorphic rocks. It is also found as a constituent of pegmatite dykes and is often a by-product of mining for other gems such as beryl or metals like tungsten, columbium or lithium. Blue Topaz does occur in nature, but is rare and almost always light color.
Besides, we can make NATURAL SKY BLUE TOPAZ stones in other popular shapes.
The clarity is clean, no included. The cutting & polishing are good.
Contact us today to get the high quality of NATURAL SKY BLUE TOPAZ gemstones from China Suppliers and wholesalers.