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Adularescence

Victorian Moonstone Fringe Necklace.
Victorian Moonstone Fringe Necklace.

Adularescence is an optical phenomena often called the “moonstone” effect. The phenomenon is applied to feldspar, usually orthoclase that, when cut as a cabochon, exhibits a floating, billowy bluish or white light as the stone is turned. Referred to as schiller by mineralogists.

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