Group of Four Copper Mineral Specimens: Malachite and Dioptase

About Auction

Timed

Fine Arts, Antiques and Jewelry Online Auctio...

By Aspire Auctions

Dec 5, 2025 - Dec 13, 2025

Set Reminder 2025-12-05 03:00:00 2025-12-13 06:00:00 America/New_York Bidsquare Bidsquare : Fine Arts, Antiques and Jewelry Online Auction https://www.bidsquare.com/auctions/aspire-auctions/fine-arts-antiques-and-jewelry-online-auction-21467
Aspire Auctions katya@aspireauctions.com

View Full Catalog (981)

• Lot Description
  A curated group of four vibrant copper-bearing mineral specimens, showcasing the striking color and varied crystallization typical of secondary copper deposits. The largest specimen is a sculptural malachite cluster formed in bold, elongated blades with rich, velvety green coloration and a silky, satiny sheen. Complementing it are three dioptase specimens, each illustrating a different and desirable habit of this intensely colored copper silicate mineral, 1"H x 1-7/8" x 1-3/4". <br> One dioptase piece presents a sparkling druse of sharply faceted, deep emerald-green crystals scattered across a pale quartz matrix (1-1/8"H x 1-5/8"W), their high transparency and glassy luster creating dramatic contrast. A second specimen features isolated dioptase crystals rising from a bed of drusy quartz (1"H x 2-1/4"W x 1-1/4"D), displaying vivid blue-green saturation and crisp hexagonal geometry. The final piece is a single, well-terminated dioptase crystal mounted on a clear acrylic base (3/4"H), offering excellent translucency, bright internal reflections, and classic prismatic form. Dioptase from Altyn-Tyube (Altyn-Tube) Kazakhstan.