Black Tourmaline in Quartz
  • Composition: Na(Mg,Fe,Li,Mn,Al)3 Al6 (BO3)3Si6.O18(OH,F)4
  • Hardness: 7.0 - 7.5
  • Details: These are beautiful crystals of Black Tourmaline with natural polish the crystals are beautifully embedded in white Quarz.