Petr Hykš:
Epidote crystal in quartz (micro-capture) 200x
Petr Hykš:
Epidote crystals in quartz (micro-capture) 45x
Petr Hykš:
Verdelite (zoom 200x)
Petr Hykš:
Libethenite (zoom 200x)
Petr Hykš:
Libethenite (zoom 200x)
Petr Hykš:
Smoky quartz crystal
Petr Hykš:
Tetragonal chalcopyrite crystals (micro-capture, 200x)
Petr Hykš:
Olivine relics in garnet-rich serpentinised peridotite/eclogite
Petr Hykš:
Possible jasper inclusions (zoom 200x)
Petr Hykš:
Agate found in Elbe or Jizera terrace
Petr Hykš:
Agate found in Elbe or Jizera terrace
Petr Hykš:
Agate (as found)
Petr Hykš:
Quartz crystal (micro-capture, 200x)
Petr Hykš:
Quartz monocrystal
Petr Hykš:
Quartz, var. amethyst
Petr Hykš:
Tourmaline (micro-capture)
Petr Hykš:
Chalcopyrite coating on calcite crystals (micro-capture, 30x)
Petr Hykš:
Calcite (micro-capture)
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Chalcedony coating on pure quartz crystals pseudomorph after calcite (micro-capture)
Petr Hykš:
Tourmaline (micro-capture)
Petr Hykš:
Quartz, var. morion
Petr Hykš:
Calcite monocrystal
Petr Hykš:
Calcite
Petr Hykš:
Muscovite
Petr Hykš:
Lepidolite
Petr Hykš:
Quartz, var. citrine (micro-capture)
Petr Hykš:
Quartz, var. citrine (micro-capture)
Petr Hykš:
Agate found in Elbe or Jizera terrace
Petr Hykš:
Quartz monocrystal
