Miargyrit
Dva milimetry velká srostlice krystalů miargyritu narostlá v dutině masivního křemene.
Millerite
Nickel sulfide needles from the 5th floor of the Prokop vein.
Pyrope
Five polished crystals of intensely red Czech garnet. The largest garnet is 6 mm in size.
Dyscrasite
Silver-shiny crystals of dyscrasite in matte black arsenic. The largest, fan-shaped cluster of dyscrasite is 8 mm in size.
Sternbergit
Metallic, bronze-looking Sternbergite crystals on a massive Proustit. The largest crystal is about 0.5 mm big. Jáchymov is the type […]
Perroudite
Tiny orange-red crystalline aggregates of the extremely rare sulfide of unusual composition Hg5Ag4S5(I,Br)2Cl2 from the type locality Cap Garrone.
Línekite, braunerite
Yellow tabular crystals of the very rare minerals línekite (square) and braunerite (hexagonal) from the type locality Jáchymov.
Línekite, braunerite
Yellow tabular crystals of the very rare minerals línekite (square) and braunerite (hexagonal) from the type locality Jáchymov.
Gold
Aggregate of gold crystals with exceptionally expressive skeletal growth.
Gold
Gold crystal aggregate with exceptionally pronounced skeletal growth.
Gold
Specimen of skeletal, crystalline-forming native gold .
Sapphire
Naturally polished sapphire from a world-famous locality, weighing 0.75 carat.