Sapphire 10x12-13x15mm Irregular Slice - 8 Inch Birds Eye Rhyolite Ethiopian Opal was first discovered

Ethiopian Opal was first discovered in Ethiopia in 1994

igneous rock with high silica content

or subject it to pressure

gray and white

Sapphire 10x12-13x15mm Irregular Slice - 8 Inch Birds Eye Rhyolite Ethiopian Opal was first discoveredSapphires 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