46.017 Tourmaline Crystal #4

  • Covill, Charles W;Covill Original Designs (1994) 5-18;
  • L/W=1.049
  • H/W=0.577
  • Vol/W^3=0.206
  • 76+12 Facets
  • Gear: 96
  • Remarks: RI=1.64
6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 <96> L L T T W W U U C C P P PC 46.017 Tourmaline Crystal #4 Covill, Charles W: Covill Original Designs, 5-18 (1994) Angles for R.I. = 1.640 76 facets + 12 girdles 1-fold, mirror-image symmetry; 96 index L/W = 1.049 T/W = 0.688 U/W = 0.641 P/W = 0.476 C/W = 0.091 Vol/W³ = 0.206 pc46017.asc