tranquilometro: Uraninite
tranquilometro: Sapphire - aluminum oxide crystal
tranquilometro: Fluorite
tranquilometro: Czech National Museum
tranquilometro: Antimony , Sb, element 51
tranquilometro: Antimony , Sb, element 51
tranquilometro: Cinnabar / Cinnabarite aka mercury (II) sulfide crystal
tranquilometro: Antimonite
tranquilometro: Geothite Iron (III) oxide-hydroxide
tranquilometro: Hematite - iron oxide rainbow crystal
tranquilometro: Chalcanthite - pentahydrate copper sulfate crystal
tranquilometro: Fluorite - Calcium fluoride crystal
tranquilometro: Dioptase - copper cyclosilicate cystal -
tranquilometro: Opal Drahy - hydrated amorphous silica crystal
tranquilometro: Opal Drahy - hydrated amorphous silica crystal
tranquilometro: Geothite Iron (III) oxide-hydroxide
tranquilometro: Dioptase - copper cyclosilicate cystal -
tranquilometro: Epidote - calcium aluminium iron sorosilicate mineral
tranquilometro: Dioptase - copper cyclosilicate cystal -
tranquilometro: Limonite - iron oxide hydroxide composite - appears like the rainbow
tranquilometro: Rubellite - pink version of tourmaline
tranquilometro: Dioptase - copper cyclosilicate cystal -
tranquilometro: Dioptase - copper cyclosilicate cystal -
tranquilometro: Dioptase - copper cyclosilicate cystal -
tranquilometro: Meteorite - Seymchan pallasit / nalez 1967
tranquilometro: Sabal major - fossilized palm
tranquilometro: Sikhote - Alin selezo IIAB, nalez 1947
tranquilometro: Uranium glass
tranquilometro: Sabal raphifolia
tranquilometro: Meteorite!!!!