Shattuckite 8mm Star Cut Coin - 15-16 Inch CutFaceted The boundaries of the included

The boundaries of the included crystals are visible and are known as “phantoms

a hydrous copper silicate

Iolite most commonly occurs in shades of blue-gray

Lavender Amethyst is a transparent lavender variety of Amethyst

Shattuckite 8mm Star Cut Coin - 15-16 Inch CutFaceted The boundaries of the includedShattuckite is a rare copper silicate hydroxide mineral. It occurs in bright turquoise blues and darker blues as well as rust reds, commonly with inclusions of copper in speckled patterns throughout the stone. Shattuckite is a pseudomorph, meaning it forms by replacing another minerals crystal structure atom by atom with its own crystal structure, with little alteration of the external shape of the original crystal.