Sapphire 4mm Dark Blue Faceted Round A Grade - 15-16 Inch Jagged Rough Collar and pattern

and pattern

and veins within the tan

The mines these stones are sourced from are primarily copper mines

any color of the rainbow

The inner layer of the shell is composed of nacre (mother-of-pearl)

Sapphire 4mm Dark Blue Faceted Round A Grade - 15-16 Inch Jagged Rough Collar and patternSapphires 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