1.716 Roundabout BCA

  • Hamer| John;Personal communication 2017;
  • L/W=1
  • H/W=0.632
  • Vol/W^3=0.201
  • 85+16 Facets
  • Gear: 96
  • Remarks: BCA=Below the Critical Angle
6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 <96> L L U U W W T T C C P P a b c c d T 1 g 2 1 2 a b c c d a b c c d T 1 g 2 1 2 a b c c d PC 01.716 Roundabout. BCA. Designed by J Hamer. April 2011. Copyright assigned to the public domain. Angles for R.I. = 1.540 85 facets + 16 girdles 4-fold, mirror-image symmetry; 96 index L/W = 1.000 T/W = 0.150 U/W = 0.150 P/W = 0.383 C/W = 0.232 Vol/W³ = 0.201 pc01716.asc
139.46°03-09-15-21-27-33-39-45-51-57-63-69-75-81-87-93Cut to centrepoint
g90.00°03-09-15-21-27-33-39-45-51-57-63-69-75-81-87-93Size stone
237.50°05-07-17-19-29-31-41-43-53-55-65-67-77-79-89-91Meet1, g
a40.93°03-09-15-21-27-33-39-45-51-57-63-69-75-81-87-93Level girdle
b38.86°02-10-14-22-26-34-38-46-50-58-62-70-74-82-86-94Meet a, g
c23.83°04-08-16-20-28-32-40-44-52-56-64-68-76-80-88-92Meet b, a
d20.50°96-24-48-72Meet b, c
T0.00°TableMeet d, c

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