13.013 Tourmaline Triangle

  • Word, Sid;Facets, Jun 1976, n17p3;
  • L/W=1.095
  • H/W=0.667
  • Vol/W^3=0.248
  • 55+12 Facets
  • Gear: 96
8 16 24 32 40 48 56 64 72 80 88 <96> L L U U W W T T C C P P PC 13.013 Tourmaline Triangle Word, Sid:Facets, Jun 76, p13 Word, Sid: Seattle F Design, Mar 77 Word, Sid: Faceter's Gem Cuts v2 , n68 Angles for R.I. = 1.540 55 facets + 12 girdles 3-fold, mirror-image symmetry; 96 index L/W = 1.095 T/W = 0.615 U/W = 0.573 P/W = 0.480 C/W = 0.162 Vol/W³ = 0.248 pc13013.asc