- Dioptase, Hydrozincite, Wulfenite
- Miniature, 3.9 x 2.5 x 2.1 cm
- Mammoth-Saint Anthony Mine (Mammoth-St Anthony Mine; Mammoth Mine; St. Anthony Mine), St. Anthony deposit, Tiger, Mammoth District, Pinal Co., Arizona, USA
Beautifully gemmy, emerald-green dioptase needles are concentrated near the crest of the wedge-like, mounded matrix. Wulfenites cover the entire piece and are coated with hydrozincite. Ex. John Ydren Collection.