0.75ct Diamond (Cushion, 5.29×5.29mm, White) vs 1ct Sapphire (Oval, 7×5mm, Blue)
Quick summary: When looked from above (face-up position), 1ct Sapphire (7×5mm, oval cut) appears 14% 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) |
vs
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1ct Sapphire (oval cut) |
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white |
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| 5.29×5.29 mm | 7×5 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
0.75ct Diamond Cushion (5.29×5.29mm, White)
and
1ct Sapphire Oval (7×5mm, Blue)
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, Sapphire 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 Sapphire (Oval) | |
| 5.29×5.29 mm | vs | 7×5 mm |
| 25.19 mm² | 28.7 mm² |
| 0.75ct Diamond Cushion (5.29×5.29mm) | |
| 1ct Sapphire Oval (7×5mm) | |
| Difference: 14% (3.51 mm²) |
1ct Sapphire (Oval, 7×5mm) has approx. 14% more face-up area than 0.75ct Diamond (Cushion, 5.29×5.29mm).
Popular comparisons:
- 0.75ct Diamond (Cushion, White, 5.29 x 5.29) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 0.75ct Diamond (Cushion, White, 5.29 x 5.29) vs. 1.59ct Spinel (Oval, Red, 9.15 x 6.1)
- 0.75ct Diamond (Cushion, White, 5.29 x 5.29) vs. 1ct Diamond (Cushion, White, 5.83 x 5.83)
- 0.75ct Diamond (Cushion, White, 5.29 x 5.29) vs. 0.55ct Diamond (Cushion, Light Yellowish Green, 5.37 x 4.3)
- 0.75ct Diamond (Cushion, White, 5.29 x 5.29) vs. 1.59ct Spinel (Oval, Red, 8.2 x 6.4)
- 0.75ct Diamond (Cushion, White, 5.29 x 5.29) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 0.75ct Diamond (Cushion, White, 5.29 x 5.29) vs. 0.75ct Diamond (Emerald, White, 6.08 x 4.5)
- 0.75ct Diamond (Cushion, White, 5.29 x 5.29) vs. 0.75ct Morganite (Pear, Light Purple, 8.6 x 5.18)