Garnet, clinochlore - Rodingites from Bellecombe, Aosta...
Specimen composed of small, well-formed, shiny grossular...
Specimen composed of small, well-formed, shiny grossular...
Gibbsite (aluminum ore) with a botryoidal shape and a...
Quincyte, known as “pink opal.” Cut and semi-polished on the...
Naturally shiny and transparent quartz point (unresurfaced,...
Quartz with chlorite inclusions and shiny surfaces, some of...
Small, shiny, translucent crystal with a beautiful, rich...
Small pseudo-cubic pyrite crystal with superb brilliance. A...
Small pseudo-cubic pyrite crystal with superb brilliance. A...
Fibrous malachite with a slender shape. The fineness of the...
This Moroccan specimen offers a striking contrast: a cluster...
Group of several well-formed almandine crystals, deep brownish...
A cluster of slender, fairly bright quartz crystals with fine...
An elegant bouquet of translucent, brilliant quartz crystals,...
Bouquet of slender, translucent quartz crystals with fine...
Hyalite opal on basalt, in perfect condition, displaying vivid...
A beautiful cluster of slightly smoky quartz crystals, very...
Small aerial group of translucent quartz. The classic Dauphiné...
Set of slightly bluish, shiny, and locally translucent tabular...
A superb and unusual combination of hyalite opal, reactive to...
Small, high-quality specimen composed of tiny crystals of...
Rutile epitaxy around small hematite crystals on rhyolite....
Rutile epitaxy around small hematite crystals on rhyolite....
Quartz plate composed of well-developed crystals with smooth,...
Small aerial group of translucent quartz. The classic Dauphiné...
A large, floating, translucent smoky quartz point, partially...
A cluster of translucent quartz crystals with a beautiful...
Plate featuring a cluster of translucent quartz crystals,...
The specimen is dominated by an aggregate of calcite crystals...