Wonderful specimen of Dioptase crystals up to 11mm on the rare copper silicate-hydroxide Shattuckite. The Shattuckite forms the base and it has botryoidal habit and saturated blue color. The Dioptases are lustrous with intense emerald-green color and very sharp, perfectly terminated crystals. Some are doubly terminated. The Dioptase crystals are slightly gemmy. In good condition – some contacts.

Marvelous!