A striking cluster of dioptase crystals from the famous Milpillas Mine, Sonora, Mexico. Dioptase is rare at the mine. The crystals are elongated, gemmy, lustrous and strongly sparkling. They have gorgeous and rich sea-blue-green color. The quality is fine. The base is covered with light blue chrysocolla. For references see the 2021 issue of The Mineralogical Record vol. 52, # 5. In very good condition – some small contacts. On acrylic base.

Superb dioptase!