Pyrolusite with limonite inclusions
High Purity Peruvian Pyrite
Ore-bearing fibrous calcite
banded aralite containing silicon carbide
spinel crystal
silverite
UV-irradiated ruby
Polished Amethyst
Gurasada agate
Peruvian cubic pyrite
clinopyroxene
Uranium bearing igneous rock
Sphalerite
C ă limani sulfur
Celestite containing shiny pyrite
Blue crystal mineral under ultraviolet irradiation
Blue crystal
Techereu Jade
Cerussite
Wurtzite
Red ochre
Phosphate chloride lead ore
Opal stone
manganese nodule