Summer 2020 Extravaganza Auction, Part I

The world's finest scheelite crystals have been produced from Mt. Xuebaoding in Sichuan Province, China. This is a superb example of the highly ...

This specimen features more than ten gemmy, lustrous, sharp, reddish-orange sphalerite crystals which have grown on a matrix covered with colorless dr

Malachite is a bright green copper carbonate hydroxide mineral which occurs in many crystal habits and forms. This fantastic specimen features long (7

This attractive apophyllite specimen features well-formed, lustrous, transparent to translucent light green crystals that are blocky in shape with ste

Aegirine is a member of the clinopyroxene group of inosilicates and is a sodium iron silicate. Aegirine occurs as dark green, monoclinic, prismatic cr

Adamite is a zinc arsenate hydroxide mineral which typically occurs in the oxidized or weathered zone above zinc ore occurrences. Pure adamite is colo

A superb, crystallized botryoidal crust of bright yellow Mimetite. Mimetite is a lead arsenate chloride mineral which forms as a secondary mineral in

Beautiful Quartz v. Amethyst from the Acatitlan Mine, Taxco de Alarcon, Mun. de Taxco, Guerrero, Mexico. 6" x 5" x 2.5". Provenance:...

Cerussite is a favorite species of mineral collectors. It is a lead carbonate mineral and is an important ore of lead. Cerussite crystallizes in the o

A spectacular specimen of the lead carbonate mineral Cerussite. Cerussite is popular with collectors worldwide as it frequently produces well formed,

An attractive mineral specimen featuring dark olive-green cube-octahedral fluorite crystals in association with "booklets" of yellowish mu...

Mined since around 1920, the Okorusu Mine is an open pit fluorite mine. The deposit is part of an alkaline igneous-carbonatite ring-dike complex where

Two doubly-terminated predominately smoky-colored quartz crystals on a granitic matrix. The quartz has good luster and has a slight hint of amethyst c

A superb, large, single color-zoned crystal of quartz from the world famous deposit in the Goboboseb Mountains of Namibia. The quartz crystal features

An attractive quartz variety amethyst specimen featuring a single, stout, prismatic, purple-colored quartz crystal on a basalt rock matrix which is fu

The Erongo Mountain is 20 km north of the town of Usakos in north central Namibia. Erongo mountain is 65 km in diameter and has significant mineral sp

This specimen was recovered from one of the numerous, complex granitic pegmatites in the area of Bulochi, Pakistan. Bulochi is a small village 4 kilom

This is a "jewel" of a topaz crystal, possessing a strong color, glassy luster, and gem-quality transparency. The crystal has textbook for...

A cluster of vibrant-green, octahedral fluorite crystals in superb condition from a surface deposit located 3 km north of the village of Riemvasmaak.

A very attractive and fascinating amethystine quartz crystal cluster from the Boekenhoutshoek area of South Africa. This occurence of quartz has been