subject: The Tereschenko Blue Diamond [print this page] The Tereschenko or Mouawad Blue Diamond received its unusual hue through exposure to boron while it was being formed. Natural blue diamonds account for only 0.1% of all natural diamonds, and are unique among colored diamonds in that they are semi-conductors of electricity. Irradiation can induce a blue tint into a colorless diamond, but artificially colored diamonds are considered less valuable than the very rare natural colored diamonds.
