09.054 Foursquare Brilliant

  • Aspin, R;Lapidary Journal, Jan 1972, p1390;
  • L/W=1.000
  • H/W=0.624
  • Vol/W^3=0.262
  • 77+16 Facets
  • Gear: 96
12 24 36 48 60 72 84 <96> W W U U L L T T C C P P PC 09.054 Foursquare Brilliant Aspin, R; Lapidary J, Jan 72, p1390 Angles for R.I. = 1.540 77 facets + 16 girdles 4-fold, mirror-image symmetry; 96 index L/W = 1.000 T/W = 0.700 U/W = 0.700 P/W = 0.462 C/W = 0.142 Vol/W³ = 0.262 pc09054.asc