04.091 Tourmaline Nodule Rectangle II

  • Vargas, Glenn & Martha;Diagrams for Faceting v3 (1987) p58;
  • L/W=1.333
  • H/W=0.862
  • Vol/W^3=0.543
  • 43+8 Facets
  • Gear: 32
4 8 12 16 20 24 28 <32> W W U U L L T T C C P P PC 04.091 Tourmaline Nodule Rectangle #2 Vargas, Glenn & Martha; Diag for Faceting v3, p58 Angles for R.I. = 1.760 43 facets + 8 girdles 2-fold, mirror-image symmetry; 32 index L/W = 1.333 T/W = 0.933 U/W = 0.600 P/W = 0.677 C/W = 0.153 Vol/W³ = 0.543 pc04091.asc