01.002 Spiral Brilliant

  • Schreur, Clarence;Lapidary Journal, May 1963, p301;
  • L/W=1.000
  • H/W=0.677
  • Vol/W^3=0.245
  • 65+R Facets
  • Gear: 64
4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 <64> L L U U W W T T C C P P PC 01.002 Spiral Brilliant Schreur, Clarence; Lapidary J, May 63, p301 Angles for R.I. = 1.540 65 facets + 64 girdles 8-fold symmetry; 64 index L/W = 1.000 T/W = 0.554 U/W = 0.554 P/W = 0.496 C/W = 0.161 Vol/W³ = 0.245 pc01002.asc