Lazulite
Rich specimen of intensely shiny, deep blue Lazulite crystals growing into a cavity together with Quartz. The largest Lazulite crystal […]
Lazulite, Siderite
Increase of very shiny crystals of saturated blue Lazulite with ochre crystals of Siderite. The largest crystals of Lazulite are […]
Calaverite (roasted ore)
An interesting sample of gold ore originally composed of gold telluride – calaverite, which was subsequently subjected to a heat […]
Amethyst
Amethyst crystal clusters with a pale purple hue, where a 5 cm long crystal forms a skeletal scepter.
Copper in gypsum
Beautiful dendritic, thin crystals of pure copper in a clear gypsum crystal.
Copper
Native Copper flake.
Pyrite
Radiálí agregát pyritu tvořící tzv. “pyritové slunce”.
Benitoite
Gorgeous, dark blue crystals of a rare silicate of barium and titanium up to 18 mm in size.
Lazulite
A double-sided specimen featuring rich blue, glossy lazulite crystals. On one side, lazulite crystals dominate, up to 10 mm in […]
Linarite
An aesthetic cluster of intensely blue Linarite crystals from the renowned Arizona locality that grew on quartz. The size of […]
Agate
Striped agate with a central cavity filled with small quartz crystals .
Agate
Colorfully banded agate from the northwest United States.