Ruby
PC 15.049A FVS-3 Arcturas
Designed by Fred W. Van Sant, Star Cuts I
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 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
cushion, mixed or brilliant, RI 1.74-1.80, Mogok depth 0.60-0.75. 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.
Alternates considered
PC 09.076A FVS-85
Fred W. Van Sant, Star Cuts II
- Shape
- Cushion
- Facets
- 85
- L/W ratio
- 1.00
- Depth ratio
- 0.679
- Table fraction
- 57.1%
- ISO brightness
- 80.2%
- Pavilion margin
- 7.83°
- Gem score
- 0.8811
cushion, mixed or brilliant, RI 1.74-1.80, Mogok depth 0.60-0.75. Designed for the gem; ISO 80.2 % at n_d 1.7682, pavilion margin 7.8 deg, gem score 0.8811 (rank 441 of all suitable designs). Crown main 38.74 deg / pavilion main 42.27 deg, 85 facets, L/W 1.00, depth/width 0.68, table 0.57.
Design: PC 09.076A FVS-85 — Fred W. Van Sant, Star Cuts II. Craft-heritage reference from the historical faceting-design corpus; not a studio-owned design.
PC 09.131 Square Cushion
Williams, Evan
- Shape
- Cushion
- Facets
- 81
- L/W ratio
- 1.00
- Depth ratio
- 0.644
- Table fraction
- 47.0%
- ISO brightness
- 79.2%
- Pavilion margin
- 8.56°
- Gem score
- 0.8750
cushion, mixed or brilliant, RI 1.74-1.80, Mogok depth 0.60-0.75. Designed for the gem; ISO 79.2 % at n_d 1.7682, pavilion margin 8.6 deg, gem score 0.8750 (rank 530 of all suitable designs). Crown main 34.0 deg / pavilion main 43.0 deg, 81 facets, L/W 1.00, depth/width 0.64, table 0.47.
Design: PC 09.131 Square Cushion — Williams, Evan. Craft-heritage reference from the historical faceting-design corpus; not a studio-owned design.
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