Shattuckite 8mm Star Cut Coin - 15-16 Inch Cat's Eye white and clear stones are

white and clear stones are also seen

and is a result of trace amounts of copper or chromium

which takes millions of years

thought to be derived from trace amounts of titanium

Shattuckite 8mm Star Cut Coin - 15-16 Inch Cat's Eye white and clear stones areShattuckite 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.