Goshenite
Two crystals of clear, in some places even transparent, gem-quality beryl. The larger crystal, measuring 4 cm, is naturally damaged […]
Dioptase
Intensely green crystals of glossy dioptase up to 2 mm in size with fibrous malachite needles.
Gadolinit
Vzorek černého masivního silikátu berylia a vzácných zemin – gadolinitu.
Prismatin
Sloupcovité krystaly šedého, velmi vzácného borosilikátu prismatinitu (popsán pouze na 9 lokalitách) v bílo béžovém mastku.
Hessonite, Aquamarine
Unusuall combination of hessonite garnet and Aquamarine
Hessonite, Diopside
Cluster of lustrous brownish-orange hessonite crystals in gray diopside. The largest crystal is 12 mm in size.
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 […]
Astrophyllite.
Historical sample of dark brown mica-like cleavage crystals of Astrophyllite in light feldspar. The elongated black crystal in the center […]
Andradit
Increase in shiny, translucent yellow-green andradite crystals. The size of the crystals is approximately 3 mm.
Aenigmatite
Black well-cleavable crystal of silky lustrous aenigmatite enveloped by fibrous aggregates of astrophyllite in a greenish microcline. The crystal is […]
Cancrinite
Massive grey feldspathoid sample – Kankrinite.