Chalk Mountain, Spruce Pine, North Carolina
This beautiful slab of hyalite opal is mostly white, but generously veined with grey and scintillating colorless crystal points around its edge. The top surface is carpeted, however, with a profusion of delicate pale green-blue crystals that spring to life with an unexpected vibrancy when exposed to short wave Ultraviolet light. Specimens of hyalite-opal from this locale are said to be the most highly fluorescent opal in the world, and this good-sized example measures 8½ x 6 7/8 x 2¼ inches.
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