Spinel on marble - Luc Yen, Yen Bai Province, Vietnam
Incomplete spinel octahedra on a white marble matrix, offering...
Incomplete spinel octahedra on a white marble matrix, offering...
Plate composed of a multitude of white stilbite in good...
Group of translucent gypsum crystals from the former...
Well-crystallized, brilliant specimen of skutterudite from...
Brazilian copper-bearing rutile stone.1.6 x 1.3 x 0.8 cm
Small piece composed of several wavellite spheres of different...
Small piece composed of several wavellite spheres with two...
Aerial group of shiny epidote crystals.3 x 1.5 x 1.3 cm
Botryoidal quartz, commonly called "agate grappe", with a...
Botryoidal quartz, commonly called "agate grappe" has a lovely...
Botryoidal quartz, commonly known as "agate grappe", has a...
Botryoidal quartz, commonly called white "Agate grappe" (the...
Small, deep-orange calcite scalenohedrons on basalt. Calcite...
Bright, pseudo-cubic green apophyllite crystals on basaltic...
Group of very bright smoky quartz from Australia.4.5 x 2.8 x 2 cm
Vanadinite with skeletal structure, deep red on the front and...
Xenotime crystal (rare yttrium phosphate) in perfect condition...
Xenotime crystal (rare yttrium phosphate) in perfect condition...
Xenotime crystal (rare yttrium phosphate) in perfect condition...
Nice little group of amethyst crystals from Mexico.2.5 x 2.2 x...
Long, fine amethyst point in perfect condition, bright and...
Superb set of royal-blue azurite with excellent brilliance and...
Beautifully brilliant amethyst from the Alacam amethyst mine...
Classic Malian association of well expressed prehnite and...