2.5ct Emerald (Cushion, 8.65×8.65mm, Green) vs 2.5ct Diamond (Cushion, 7.91×7.91mm, White)
Quick summary: When looked from above (face-up position), 2.5ct Emerald (8.65×8.65mm, cushion cut) appears 20% larger than 2.5ct Diamond (7.91×7.91mm, cushion cut). See below how they compare side-by-side on a ring and finger.
| 2.5ct Emerald (cushion cut) |
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2.5ct Diamond (cushion cut) |
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green |
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| 8.65×8.65 mm | 7.91×7.91 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
2.5ct Emerald Cushion (8.65×8.65mm, Green)
and
2.5ct Diamond Cushion (7.91×7.91mm, White)
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, Diamond will face-up smaller than Emerald for a given
carat weight, because it has higher specific gravity
(3.52 vs. 2.72 - this means it's "heavier" compared to Emerald 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.
| 2.5 Ct Emerald (Cushion) | 2.5 Ct Diamond (Cushion) | |
| 8.65×8.65 mm | vs | 7.91×7.91 mm |
| 67.34 mm² | 56.31 mm² |
| 2.5ct Emerald Cushion (8.65×8.65mm) | |
| 2.5ct Diamond Cushion (7.91×7.91mm) | |
| Difference: 20% (11.03 mm²) |
2.5ct Emerald (Cushion, 8.65×8.65mm) has approx. 20% more face-up area than 2.5ct Diamond (Cushion, 7.91×7.91mm).
Popular comparisons:
- 2.5ct Emerald (Cushion, Green, 8.65 x 8.65) vs. 5ct Sapphire (Cushion, Blue, 9.56 x 9.56)
- 2.5ct Emerald (Cushion, Green, 8.65 x 8.65) vs. 2.3ct Emerald (Cushion, Green, 8.41 x 8.41)
- 2.5ct Emerald (Cushion, Green, 8.65 x 8.65) vs. 5ct Sapphire (Oval, Blue, 12.93 x 8.62)
- 2.5ct Emerald (Cushion, Green, 8.65 x 8.65) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 5ct Emerald (Cushion, Dark Green, 10.9 x 10.9) vs. 14ct Peridot (Cushion, Green, 14.3 x 14.3)
- 7ct Emerald (Cushion, Green, 12.19 x 12.19) vs. 5ct Emerald (Cabochon, Dark Green, 13.34 x 8.89)
- 8.48ct Emerald (Cushion, Green, 13 x 13) vs. 8.75ct Emerald (Emerald, Green, 15 x 11.11)
- 1ct Emerald (Cushion, Green, 6.37 x 6.37) vs. 1ct Diamond (Cushion, White, 5.83 x 5.83)