0.75ct Diamond (Cushion, 5.29×5.29mm, Yellow) vs 1ct Ruby (Cushion, 5.59×5.59mm, Red)
Quick summary: When looked from above (face-up position), 1ct Ruby (5.59×5.59mm, cushion cut) appears 12% larger than 0.75ct Diamond (5.29×5.29mm, cushion cut). See below how they compare side-by-side on a ring and finger.
| 0.75ct Diamond (cushion cut) |
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1ct Ruby (cushion cut) |
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yellow |
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| 5.29×5.29 mm | 5.59×5.59 mm | |
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Actual sizes of
0.75ct Diamond Cushion (5.29×5.29mm, Yellow)
and
1ct Ruby Cushion (5.59×5.59mm, 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.
| 0.75 Ct Diamond (Cushion) | 1 Ct Ruby (Cushion) | |
| 5.29×5.29 mm | vs | 5.59×5.59 mm |
| 25.19 mm² | 28.12 mm² |
| 0.75ct Diamond Cushion (5.29×5.29mm) | |
| 1ct Ruby Cushion (5.59×5.59mm) | |
| Difference: 12% (2.93 mm²) |
1ct Ruby Cushion (5.59×5.59mm) has approx. 12% more face-up area than 0.75ct Diamond Cushion (5.29×5.29mm).
Popular comparisons:
- 0.75ct Diamond (Cushion, Yellow, 5.29 x 5.29) vs. 0.52ct Diamond (Oval, Yellow, 6.53 x 4.35)
- 1.01ct Diamond (Cushion, White, 5.85 x 5.85) vs. 1ct Spinel (Cushion, Red, 5.79 x 5.79)
- 2ct Diamond (Cushion, White, 7.34 x 7.34) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 1ct Diamond (Cushion, White, 5.8 x 5.8) vs. 1.03ct Diamond (Round, White, 6.56 x 6.56)
- 1.56ct Diamond (Cushion, White, 6.27 x 6.27) vs. 1.66ct Diamond (Cushion, White, 6.49 x 6.47)
- 1ct Diamond (Cushion, White, 5.83 x 5.83) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 0.25ct Diamond (Cushion, White, 3.7 x 3.7) vs. 0.3ct Diamond (Cushion, White, 3.9 x 3.9)
- 22ct Diamond (Cushion, White, 16.33 x 16.33) vs. 22ct Diamond (Round, White, 18.21 x 18.21)
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Actual size is currently adjusted to screen.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.