Amethyst - Piedra Parada, Veracruz, Mexico
Long, fine amethyst point in perfect condition, shiny and...
Long, fine amethyst point in perfect condition, shiny and...
Single crystal of brown zunyite with truncated edges and a few...
Sceptre amethyst quartz with a beautiful brilliance and well...
Small point of naturally brilliant and transparent quartz (not...
Rutile epitaxy around hematite crystals, very well terminated,...
Epitaxial rutile around small hematite crystals on rhyolite....
Epitaxial rutile around hematite crystals. From a discovery of...
Epitaxial rutile around small hematite crystals. From a...
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...
A very attractive specimen of cupriferous aragonite with an...
Plating of proustite crystals in good condition and very shiny...
Numerous small proustite crystals in very good condition and...
Proustite crystals (the largest measuring 0.7 cm) in very good...
Numerous small proustite crystals very bright on a thin...
Small piece composed of several wavellite spheres, one of...
Classical Malian association of prehnite spheres on...
Hyalite opal on basalt, in perfect condition, showing a very...
Colorless to very slightly smoky quartz point with inclusions...
Pyrite with rare pseudo-rhombohedral* habitus showing growth...
Polished slice of polyhedral agate, to be appreciated as such...
Fiber-terminated tourmaline crystal with a superb blue...
Rare yellow vanadinite (color given by pseudomorphosis into...
Small, pseudo-cubic pyrite crystal with superb brilliance. A...
Dark violet fluorite with shiny surfaces dotted with a few...
Pyrite group with rare pseudo-rhombohedral* habitus showing...
Truncated-edged hessonite garnets with beautiful brilliance,...
Native copper with an atypical skeletal structure, due to...
Small, fairly bright azurite crystals, contrasting with a...
Association of small magnetite octahedrons with a beautiful...