Firefly quartz with petroleum inclusions - Madirobe, Madagascar
Piece composed of two quartz crystals joined together,...
Piece composed of two quartz crystals joined together,...
Floating apple-green pyromorphite crystal from the Daoping...
Dioptase crystals of respectable size (up to 2.1 cm) for the...
Sparkly brotryoidal quartz, very slightly amethysted,...
A combination of chalcopyrite, triglyph pyrite, sphalerite and...
A very dense piece, composed mainly of well-crystallized black...
Floating piece featuring a perfectly terminated translucent...
Dioptase in honorable-size crystals, brilliant, in excellent...
Landscape stone from China, rectangular in shape, in the...
Landscape stone from China, rectangular in shape, in the...
Group of bluish-gray, rhombic barite crystals of various...
Plate composed of chalcedony in small stalactites surrounded...
Dark-red vanadinite crystals of superb brilliance, with gemmy...
Native copper with an atypical skeletal structure, due to...
Small “feather” of native copper with an atypical skeletal...
Cube of purple fluorite, with distinct internal edging, on a...
Native copper with an atypical skeletal structure, due to...
Native copper with an atypical skeletal structure, due to...
An architecturally complex piece of brilliant white quartz,...
Set of smoky, fairly bright quartz of fine quality.3.7 x 2.9 x...
Group of smoky and biterminated quartz from a small Australian...
Group of smoky and biterminated quartz from a small Australian...
Small, extremely bright and well-formed green demantoid...
Beautifully bright sceptered quartz with hydrocarbon...
Aragonite with violet hues in the centre and yellow at the...
Several crystals of proustite of good size (centimetre), and...
Small, deep-orange calcite scalenohedrons on basalt. Calcite...
Piece composed of a multitude of green, translucent and very...
A specimen composed of well-defined, brilliant-blue azurite...