Vanadinite
Druse of shiny vanadinite crystals up to 1 cm large .
Dioptase
Intensely green crystals of glossy dioptase up to 2 mm in size with fibrous malachite needles.
Gold
Gold lavishly grown on quartz tinted green by secondary copper minerals. The aggregate at the top of the sample measures […]
Argentopyrite, proustite
A beautiful sample of red, lustrous proustit crystals on a contrasting snow-white calcite, on which dark, slightly iridescent argentopyrit tablets […]
Sapphirine
A perfect example of a rare sapphirine in the form of flat, extremely large crystals that come from new finds […]
Demantoid
Estetická ukázka vysoce ceněných sytě zelených průhledných a vysoce lesklých krystalů zelené odrůdy granátu andraditu, tzv. démantoidu. Vzorek pochází ze […]
Erythrite, skutterudite
Aesthetic samples of wine-red bladed crystals of erythrine on massive skutterudite.
Ammonite of the genus Cleoniceras
An exceptionally aesthetic slice of an ammonite of the genus Cleoniceras with segments filled with calcite crystals growing into the […]
Erythrite, skutterudite
A beautiful example of wine-red crystals of cobalt arsenate grown into a cavity in massive Skutterudite. The longest erythrite crystals […]
Xanthoconite
Aesthetic specimen of intensely red, unusually elongated crystals of proustit with crystals of the rare orange xanthoconite (proustit dimorph). The […]
Xanthoconite, proustite
Crystals of the rare orange xanthoconite with its dimorph proustite grown on contrasting white limestone. Xanthocon crystals are about 0.5 […]
Celestine
Celestine geode with clear glossy crystals up to 2 cm large.