0.99ct Diamond (Round, 6.48×6.48mm, White) vs 1.33ct Ruby (Cushion, 6.08×6.08mm, Red)
Quick summary: When looked from above (face-up position), 1.33ct Ruby (6.08×6.08mm, cushion cut) appears 0.9% larger than 0.99ct Diamond (6.48×6.48mm, round cut). See below how they compare side-by-side on a ring and finger.
| 0.99ct Diamond (round cut) |
vs
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1.33ct Ruby (cushion cut) |
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white |
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| 6.48×6.48 mm | 6.08×6.08 mm | |
| actual size | ||
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Actual size is set for screen
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Ring:
Skin tone:
Ring width: 3.0 mm
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64 mm |
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Actual sizes of
0.99ct Diamond Round (6.48×6.48mm, White)
and
1.33ct Ruby Cushion (6.08×6.08mm, Red)
as they would appear on a ring and finger.
Adjust the ring and finger size to get an idea of how these gemstones would look on your finger.
Where to buy?
For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile
Face-up Size
All things being equal, Ruby will face-up smaller than Diamond for a given
carat weight, because it has higher specific gravity
(4 vs. 3.52 - this means it's "heavier" compared to Diamond of the same size). Face-up size also depends heavily on the proportions of the cut.
Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.
Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.
| 0.99 Ct Diamond (Round) | 1.33 Ct Ruby (Cushion) | |
| 6.48×6.48 mm | vs | 6.08×6.08 mm |
| 32.98 mm² | 33.27 mm² |
| 0.99ct Diamond Round (6.48×6.48mm) | |
| 1.33ct Ruby Cushion (6.08×6.08mm) | |
| Difference: 0.9% (0.29 mm²) |
1.33ct Ruby (Cushion, 6.08×6.08mm) has approx. 0.9% more face-up area than 0.99ct Diamond (Round, 6.48×6.48mm).
Popular comparisons:
- 0.99ct Diamond (Round, White, 6.48 x 6.48) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 0.99ct Diamond (Round, White, 6.48 x 6.48) vs. 0.33ct Diamond (Round, White, 4.49 x 4.49)
- 0.99ct Diamond (Round, White, 6.48 x 6.48) vs. 1.33ct Ruby (Cushion, Red, 6.5 x 6.5)
- 0.99ct Diamond (Round, White, 6.48 x 6.48) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 0.99ct Diamond (Round, White, 6.48 x 6.48) vs. 1.59ct Diamond (Round, White, 7.59 x 7.59)
- 0.99ct Diamond (Round, White, 6.48 x 6.48) vs. 1.9ct Diamond (Round, White, 8.05 x 8.05)
- 0.99ct Diamond (Round, White, 6.48 x 6.48) vs. 1.4ct Diamond (Round, White, 7.27 x 7.27)
- 0.99ct Diamond (Round, White, 6.48 x 6.48) vs. 3ct Diamond (Round, White, 9.37 x 9.37)