1ct Diamond (Radiant, 5.78×5.78mm, White) vs 2.34ct Sapphire (Cushion, 7.2×7mm, Dark Green)
Quick summary: When looked from above (face-up position), 2.34ct Sapphire (7.2×7mm, cushion cut) appears 43% larger than 1ct Diamond (5.78×5.78mm, radiant cut). See below how they compare side-by-side on a ring and finger.
| 1ct Diamond (radiant cut) |
vs
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2.34ct Sapphire (cushion cut) |
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white |
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| 5.78×5.78 mm | 7.2×7 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
1ct Diamond Radiant (5.78×5.78mm, White)
and
2.34ct Sapphire Cushion (7.2×7mm, Dark Green)
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.
| 1 Ct Diamond (Radiant) | 2.34 Ct Sapphire (Cushion) | |
| 5.78×5.78 mm | vs | 7.2×7 mm |
| 31.74 mm² | 45.36 mm² |
| 1ct Diamond Radiant (5.78×5.78mm) | |
| 2.34ct Sapphire Cushion (7.2×7mm) | |
| Difference: 43% (13.62 mm²) |
2.34ct Sapphire (Cushion, 7.2×7mm) has approx. 43% more face-up area than 1ct Diamond (Radiant, 5.78×5.78mm).
Popular comparisons:
- 1ct Diamond (Radiant, White, 5.78 x 5.78) vs. 12.34ct Emerald (Emerald, Green, 16.78 x 12.43)
- 1ct Diamond (Radiant, White, 5.78 x 5.78) vs. 1ct Moissanite (Radiant, White, 5.92 x 5.92)
- 1ct Diamond (Radiant, White, 5.78 x 5.78) vs. 1ct Diamond (Pear, White, 9.05 x 5.45)
- 2.7ct Ruby (Pear, Red, 10 x 7) vs. 3ct Ruby (Emerald, Red, 9 x 7)
- 1.5ct Tourmaline (Round, Light Red, 7.45 x 7.45) vs. 1.5ct Sapphire (Round, Light Blue, 6.84 x 6.84)
- 1ct Kyanite (Oval, Blue, 7.77 x 5.18) vs. 1ct Tanzanite (Oval, Blue, 8.07 x 5.38)
- 1ct Aquamarine (Oval, Light Blue, 8 x 6) vs. 1ct Spinel (Oval, Gray, 8 x 6)
- 6ct Morganite (Cushion, Light Red, 12 x 10) vs. 3.5ct Sapphire (Cushion, Blue, 8.49 x 8.49)