Blue aragonite - Dongshuang mine, Yunan province, China
Aesthetic, airy specimen of stalactite cupriferous aragonite...
Aesthetic, airy specimen of stalactite cupriferous aragonite...
Aerial specimen of stalactite cupriferous aragonite with an...
An attractive, airy specimen of cupriferous aragonite with an...
Copper-bearing aragonite with an attractive blue colour and...
Copper-bearing aragonite with an attractive blue colour and...
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...
Turquoise-blue aurichalcite associated with colourless calcite...
Small floating group of bright violet amethyst with deeper...
Small floating group of lilac-coloured amethysts with shiny...
A superb specimen featuring a bouquet of bright red,...
Plating of proustite crystals in good condition and very shiny...
Numerous small proustite crystals in very good condition and...
Plating of proustite crystals in good condition and very shiny...
Proustite crystals (the largest measuring 0.7 cm) in very good...
Numerous small proustite crystals very bright on a thin...
Numerous small proustite crystals in very good condition and...
A specimen of light green prehnite and byssolite from a find...
Small piece composed of several wavellite spheres, one of...
Classical Malian association of prehnite spheres on...
A bright colourless calcite geode, superbly balanced with a...
An aesthetic and ethereal specimen combining a chalcedony...
Hyalite opal on basalt, in perfect condition, showing a very...
Quartz with a very well-formed and shiny core nestled in...
Colorless, translucent quartz with inclusions of very fine...
Colorless to very slightly smoky quartz point with inclusions...
Slightly smoky quartz with rutile inclusion in golden needles...
Pyrite with rare pseudo-rhombohedral* habitus showing growth...
Polished slice of polyhedral agate, to be appreciated as such...
A group of bright dioptases, with the main crystal measuring...
Fiber-terminated tourmaline crystal with a superb blue...