Página inicialBiology THE MOST BEAUTIFUL STONES OF NATURE Aquamarinine in MuscoviteAmethystAmethystAmethystBayldoniteBenitoíteRed berylliumBismuthBoleíteCacoxeniteBlue Callaghanite in white hidromagnesitaChalcanthiteCinnabar (HgS) - ToxicCitrineClinoclaseVanadinite on white BariumCrocidolite - ToxicCrocoíteCuprosklodowskite - RadioactiveRed diamondEmmonsiteErionite - ToxicFluorite (CaF2) - ToxicFluoriteFluoriteFossils of trees with opal ringsGalena (PbS) - ToxicGeode of opalGrandidieriteHydroxyapatite (Ca 5 (PO 4) - ToxicBlue Halite and Sylvite Hematite, rutile and feldsparJeremejeviteKammereriteKarpatiteLabradoriteMalachitePallasite MeteoriteMusgraviteBlack opalOpalOsmium - The densest natural elementParticle oldest of NaturePhenacite (BeSiO4) - ToxicPyrite (FeS2) - ToxicPoudretteitePrasioliteQuartz (SiO2) - ToxicStibnite with BariumTorbernite (radioactive material)TourmalineUvarovite Tags: Biology Facebook Twitter