Blue aragonite - Dongshuang mine, Yunan province, China
Aesthetic, airy specimen of stalactite cupriferous aragonite...
Aesthetic, airy specimen of stalactite cupriferous aragonite...
Aesthetic, airy specimen of stalactite cupriferous aragonite...
An aesthetic, airy specimen of copper-bearing aragonite with...
Small slab of cupriferous aragonite with an attractive blue...
A very attractive specimen of cupriferous aragonite with an...
A superb specimen featuring a bouquet of bright red,...
Proustite crystals (the largest measuring 2 x 0.5 cm) in very...
Numerous small proustite crystals in very good condition and...
Proustite crystals (the largest measuring 0.7 cm) in very good...
A small plate of millimetre-sized proustite crystals in very...
Proustite crystals (the largest measuring 2 x 0.8 cm) in very...
A specimen of light green prehnite and byssolite from a find...
Specimen composed of a multitude of extremely brilliant...
Small piece composed of several wavellite spheres, one of...
Fine small floating plate of bright purple fluorite very...
A bright colourless calcite geode, superbly balanced with a...
Hyalite opal on basalt, in perfect condition, showing a very...
Small, naturally brilliant, transparent quartz point (not...
Slightly smoky quartz associated with golden rutile needles...
Slightly smoky quartz with rutile inclusion in golden needles...
Polished slice of polyhedral agate, to be appreciated as such...
Floating single crystal of tabular quartz with smoky edges in...
Orange chalcedony stalagmite from near Sidi Rahal, Morocco.4.5...
A group of bright dioptases, with the main crystal measuring...
Fiber-terminated tourmaline crystal with a superb blue...
High-quality diamond quartz on calcite and dolomite from the...
Very fine quartz fluorite perimorphosis covered with a layer...
Rare yellow vanadinite (color given by pseudomorphosis into...
Association of small magnetite octahedrons with a beautiful...
A group of differently oriented sceptered quartz amethysts,...
Small, mostly bright, automorphic azurite crystals (not so...
A group of faden quartz in perfect condition, composed of...