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is desired by some collectors as proof of a natural stone
These stones have unique green pigmentation when compared to other turquoise sourced from the region
the fossilized resin of prehistoric pine trees
iron or manganese imperfections
is a lab-made form of zirconium dioxide
3mm Sapphire Faceted Round A Grade - 15-16 Inch 24x36mm is desired by some collectorsSapphires are precious gemstones, but unlike rubies, they come in a rainbow of colors besides red! They are all varieties of the mineral corundum, known for its incredible hardness, second only to diamond . This makes sapphires very durable and scratch resistant. Formed deep underground during the cooling of magma, sapphires get their various colors from trace elements. Iron gives them blue, the most famous sapphire color, while titanium can create
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