PC 34.009

DOUBLE STAR

By Glenn Klein
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DataVueopen
L/W
105%
Design RI
1.76
H/W
64%
Gear
96
V/W³
0.240
Symmetry
5 (mirrored)
Facets
83
Tiers
12
Crown
14
Pavilion
69

Klein, Glenn; Unpublished;

Has small black star in culet area & larger polished-facet star surrounding that. FOR PAVILION FACETS P2 & P3... BE CAREFULL. Use a fine pre-polish lap cloudy finish at a very low RPM, or move the lap by hand to cut. Angles shown are for Corundum, Critical Angle is 35 degrees & R. I. is 1.76. HAS GREAT 3-D DEPTH EFFECT.

Wireframe

DOUBLE STAR 3D view
Top viewSide viewFront viewBack view

Pavilion

#AngleFacetsNotes
G190.00°
1938587796
G290.00°
 91028294867688687
Use only indexes 10-29-48-67-86. Ignore others.
P151.00°
 9102829474967688687
These facets leave a very slightly un-level girdle.
P250.98°
1938587796
P347.00°
 5142433435363728291
DO NOT POLISH THESE FACETS.
P443.00°
 5142433435363728291
DO NOT POLISH THESE FACETS.
P538.98°
1938587796
Main facets are C.A. plus 3 or 4 degrees

Crown

#AngleFacetsNotes
C143.00°
1938587796
C243.00°
 91028294867688687
Use only indexes 10-29-48-67-86. Ignore others.
C339.00°
1938587796
C439.00°
 91028294867688687
Use only indexes 10-29-48-67-86. Ignore others.
T0.00°
96
Have a large 75% table.