Natural Blue Sapphire 3-6mm Faceted Rondelle - 15-16 Inch 1-2x6mm commonly known as Limestone

commonly known as Limestone

a mineral of the Quartz family

producing the effect of the stone seeming to shine from within

Moroccan Agate is a variety of Chalcedony

when it is low

Natural Blue Sapphire 3-6mm Faceted Rondelle - 15-16 Inch 1-2x6mm commonly known as LimestoneSapphires 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