Home›Rocks and Minerals›Minerals›Where Found›MadagascarBrowse ByMadagascarMadagascarComments (0)Reader Challenges (0)MadagascarFilter Results3 entriesStrunz ClassAllOxides and Hydroxides (2)Crystal SystemAllCubic Crystal System (1)Orthorhombic Crystal System (2)HardnessAll7.5 to 8.5 Mohs (2)LustreAllEarthy (1)Vitreous (2)ColourAllBlue or Purple (1)Brown (2)Green (2)Grey or Black (2)Orange or Yellow (2)Red or Pink (2)RarityAllRare (1)Uncommon (1)UseAllGemstone (2)Formed By (Process)AllFractional Crystallization (2)Hydrothermal Mineral Deposition (1)Magmatism (1)Metamorphism (1)Metasomatism (1)Volcanism (1)Show ResultsBrowseCompareSelect all 3ChrysoberylMadagascarSpinelMadagascarTopazMadagascarComments (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.