Rutile and hematite - Novo Horizonte, Bahia, Brazil
Rutile epitaxy around hematite crystals, very well terminated,...
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...
Small floating group of bright violet amethyst with deeper...
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...
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...
Bright, colorless, well-formed analcime crystals from a small...
A set of bright, translucent “diamond” calcite crystals.7 x 8...
A beautiful, large, floating, translucent, automorphic gypsum...
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...
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...
Several shiny, well-formed crystals of light-green titanite...
Well-translucent, perfectly finished aquamarine single...
Attractive sample of amethyst quartz in perfect condition,...