7.175 Light Time BCA

  • Hamer| John;Personal communication 2017;
  • L/W=1
  • H/W=0.767
  • Vol/W^3=0.332
  • 53+8 Facets
  • Gear: 96
  • Remarks: BCA=Below the Critical Angle
12 24 36 48 60 72 84 <96> L L U U W W T T C C P P a b c T b c 1 g1 g2 2 1 g1 2 a b c a b c T b c 1 g1 g2 2 1 g1 2 a b c PC 07.175 Light Time. BCA. Designed by J Hamer. October 2014. Copyright assigned to the public domain. Angles for R.I. = 1.540 53 facets + 8 girdles 4-fold, mirror-image symmetry; 96 index L/W = 1.000 T/W = 0.412 U/W = 0.412 P/W = 0.487 C/W = 0.260 Vol/W³ = 0.332 pc07175.asc
140.79°96-06-12-18-24-30-36-42-48-54-60-66-72-78-84-90Cut to centerpoint
g190.00°96-24-48-72Size stone
g290.00°12-36-60-84Meet g1, 1
239.00°09-15-33-39-57-63-81-87Meet 1, g1, g2
a34.12°96-06-12-18-24-30-36-42-48-54-60-66-72-78-84-90Size girdle at corners
b31.16°09-15-33-39-57-63-81-87Meet a, g1, g2
c28.00°12-36-60-84Meet a, b
T0.00°TableMeet a. b, c

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