Sapphire
PC 02.146A Oval CL 20
Designed by Williams, Evan
Craft-heritage reference library — every cut design below is drawn from a historical faceting-design corpus with mixed third-party licensing (designer credits and license notes are shown on each spec sheet). The studio does not own and does not exclusively sell these historical designs. They are shown here for sourcing and educational context — to demonstrate the geometry our verification process can evaluate on any species. Our only studio-owned, exclusively-sold designs are Dragon Eye and Eye of Zul, under Signature Cuts.
Primary pick
PC 02.146A Oval CL 20
Williams, Evan
- Shape
- Oval
- Facets
- 73
- L/W ratio
- 1.21
- Depth ratio
- 0.639
- Table fraction
- 56.5%
- ISO brightness
- 83.5%
- Pavilion margin
- 6.66°
- Gem score
- 0.9010
oval or cushion brilliant, RI 1.74-1.80. Designed for the gem; ISO 83.5 % at n_d 1.7682, pavilion margin 6.7 deg, gem score 0.9010 (rank 221 of all suitable designs). Crown main 39.91 deg / pavilion main 41.1 deg, 73 facets, L/W 1.21, depth/width 0.64, table 0.57. Higher-ranked PC 15.049A FVS-3 Arcturas (ruby) already picked for another gem.
Design: PC 02.146A Oval CL 20 — Williams, Evan. Craft-heritage reference from the historical faceting-design corpus; not a studio-owned design.
Alternates considered
PC 15.049A FVS-3 Arcturas
Fred W. Van Sant, Star Cuts I
- Shape
- Cushion
- Facets
- 65
- L/W ratio
- 1.00
- Depth ratio
- 0.639
- Table fraction
- 57.1%
- ISO brightness
- 85.4%
- Pavilion margin
- 8.22°
- Gem score
- 0.9126
oval or cushion brilliant, RI 1.74-1.80. Designed for the gem; ISO 85.4 % at n_d 1.7682, pavilion margin 8.2 deg, gem score 0.9126 (rank 140 of all suitable designs). Crown main 37.0 deg / pavilion main 42.66 deg, 65 facets, L/W 1.00, depth/width 0.64, table 0.57.
Design: PC 15.049A FVS-3 Arcturas — Fred W. Van Sant, Star Cuts I. Craft-heritage reference from the historical faceting-design corpus; not a studio-owned design.
PC 02.145B Oval Brilliant 16 Main
Williams, Evan
- Shape
- Oval
- Facets
- 81
- L/W ratio
- 1.22
- Depth ratio
- 0.678
- Table fraction
- 57.6%
- ISO brightness
- 80.9%
- Pavilion margin
- 10.76°
- Gem score
- 0.8856
oval or cushion brilliant, RI 1.74-1.80. Designed for the gem; ISO 80.9 % at n_d 1.7682, pavilion margin 10.8 deg, gem score 0.8856 (rank 380 of all suitable designs). Crown main 42.17 deg / pavilion main 45.2 deg, 81 facets, L/W 1.22, depth/width 0.68, table 0.58.
Design: PC 02.145B Oval Brilliant 16 Main — Williams, Evan. Craft-heritage reference from the historical faceting-design corpus; not a studio-owned design.
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