1.66ct Diamond (Round, 7.7×7.7mm, White) vs 1ct Emerald (Emerald, 7.28×5.39mm, Green)
Quick summary: When looked from above (face-up position), 1.66ct Diamond (7.7×7.7mm, round cut) appears 28% larger than 1ct Emerald (7.28×5.39mm, emerald cut). See below how they compare side-by-side on a ring and finger.
| 1.66ct Diamond (round cut) |
vs
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1ct Emerald (emerald cut) |
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white |
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| 7.7×7.7 mm | 7.28×5.39 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
1.66ct Diamond Round (7.7×7.7mm, White)
and
1ct Emerald Emerald (7.28×5.39mm, 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, 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.
| 1.66 Ct Diamond (Round) | 1 Ct Emerald (Emerald) | |
| 7.7×7.7 mm | vs | 7.28×5.39 mm |
| 46.57 mm² | 36.49 mm² |
| 1.66ct Diamond Round (7.7×7.7mm) | |
| 1ct Emerald Emerald (7.28×5.39mm) | |
| Difference: 28% (10.08 mm²) |
1.66ct Diamond (Round, 7.7×7.7mm) has approx. 28% more face-up area than 1ct Emerald (Emerald, 7.28×5.39mm).
Popular comparisons:
- 1.66ct Diamond (Round, White, 7.7 x 7.7) vs. 2.01ct Diamond (Round, White, 8.2 x 8.2)
- 1.66ct Diamond (Round, White, 7.7 x 7.7) vs. 1.5ct Diamond (Round, White, 7.44 x 7.44)
- 1.66ct Diamond (Round, White, 7.7 x 7.7) vs. 1.72ct Diamond (Round, White, 7.79 x 7.79)
- 1.66ct Diamond (Round, White, 7.7 x 7.7) vs. 1.73ct Diamond (Round, White, 7.8 x 7.8)
- 1.66ct Diamond (Round, White, 7.7 x 7.7) vs. 2.1ct Diamond (Cushion, White, 7.46 x 7.46)
- 0.1ct Diamond (Round, White, 3.02 x 3.02) vs. 0.15ct Diamond (Round, White, 3.45 x 3.45)
- 1.5ct Diamond (Round, White, 7.5 x 7.5) vs. 2ct Diamond (Round, White, 8 x 8)
- 20ct Diamond (Round, White, 17.64 x 17.64) vs. 1ct Emerald (Round, Green, 6.82 x 6.82)