Home›Rocks and Minerals›Minerals›Where Found›GuatemalaBrowse ByGuatemalaGuatemalaComments (0)Reader Challenges (0)GuatemalaFilter Results1 entryStrunz ClassAllSilicates (1)HardnessAll5.75 to 6.25 Mohs (1)LustreAllPearly (1)Resinous (1)Vitreous (1)Waxy or Greasy (1)ColourAllBlue or Purple (1)Brown (1)Colourless or White (1)Green (1)Grey or Black (1)Orange or Yellow (1)Red or Pink (1)UseAllGemstone (1)Formed By (Process)AllBiomineralization (1)Hydrothermal Mineral Deposition (1)Show ResultsOpalGuatemalaComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.