Arsenopyrite and apatite – Panasqueira Mine, Covilhã, Portugal...
A lovely little association of arsenopyrite and apatite...
A lovely little association of arsenopyrite and apatite...
Polished and varnished red gypsum nodule on marly matrix.10.4...
A small single crystal of cassiterite, a tin mineral, with a...
A cluster of morion quartz crystals partially covered with...
Two crystals, including a bipyramidal anatase with a beautiful...
A DUO of a cut stone and a natural stone, crafted by...
Specimen comprising a small tuft of electric blue cavansite...
A piece of amber in a deep orange hue, polished on almost all...
A cube of blue fluorite with a yellow core, also featuring a...
A cluster of augelite crystals, well-formed and brilliant,...
A slightly smoky, naturally lustrous quartz point featuring...
A cluster of small, extremely brilliant and translucent yellow...
A specimen consisting of small, slightly mauve fluorite...
Small, needle-like crystals of aurichalcite with a lovely...
A small specimen of dioptase with a beautiful lustre,...
A specimen composed of amethyst crystals that are colourless...
A specimen comprising numerous small, vivid red garnet...
A small cluster of fluorite crystals forming well-defined...
A small, well-formed cluster of vanadinite crystals with a...
A highly attractive specimen composed of golden rutile needles...
A cluster of small, relatively lustrous, violet hexagonal...
A cluster of small, highly lustrous smoky quartz crystals. 6 x...
Crocoite needles in a lovely red-orange hue, typical of this...
A small cluster of green pyromorphite with a lovely...
Golden-coloured rutile crystals (titanium dioxide) formed by...
A small comb-shaped quartz with a translucent, highly lustrous...
A DUO of a cut stone and a rough stone, crafted by usRough...
A small specimen comprising several green wavellite spheres of...
A slab composed of small, shiny, transparent quartz needles...
A small specimen of bright cerussite, crystallised in a...
cube of blue fluorite associated with small, shiny quartz...
Proustite crystals in good condition and highly lustrous on a...