Sapphire 5-6mm Irregular Cube - 15-16 Inch Specimen Known in antiquity as the

Known in antiquity as the Speaker’s Stone

Petrification occurs when the wood is covered by sedimentary rock

which tends to be a strong blue color

Malachite was used extensively as decoration in the palaces of Russian tsars and forms the columns of St

Shiva Eye shells—also known as Pacific Cat’s Eye or Operculum—are the protective "door" of Turban snails

Sapphire 5-6mm Irregular Cube - 15-16 Inch Specimen Known in antiquity as theSapphires 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