04.156 Octagon Gem

  • Covill, Charles W;Covill Original Designs (1994) 6-13;
  • L/W=1.333
  • H/W=0.705
  • Vol/W^3=0.394
  • 61+8 Facets
  • Gear: 96
  • Remarks: RI=1.61
12 24 36 48 60 72 84 <96> L L T T W W U U C C P P PC 04.156 Octagon Gem Covill, Charles W: Covill Original Designs, (1994) 6-13 Angles for R.I. = 1.610 61 facets + 8 girdles 2-fold, mirror-image symmetry; 96 index L/W = 1.333 T/W = 0.936 U/W = 0.615 P/W = 0.570 C/W = 0.118 Vol/W³ = 0.394 pc04156.asc