06.012 Rectangular Cushion

  • Sleep, F E;Gems & Minerals, May 1972, p22;
  • L/W=1.50
  • H/W=0.676
  • Vol/W^3=0.509
  • 31+4 Facets
  • Gear: 96
12 24 36 48 60 72 84 <96> W W U U L L T T C C P P PC 06.012A Rectangular Cushion Sleep, F.E.: Gems & Min, May 72, p22 Angles for R.I. = 1.540 31 facets + 4 girdles 2-fold, mirror-image symmetry; 96 index L/W = 1.500 T/W = 0.825 U/W = 0.550 P/W = 0.490 C/W = 0.166 Vol/W³ = 0.509 pc06012.asc