20ct Ruby (Round, 16.23×16.23mm, Red) vs 1ct Emerald (Emerald, 7.28×5.39mm, Green)
Quick summary: When looked from above (face-up position), 20ct Ruby (16.23×16.23mm, round cut) appears 5.7 times larger than 1ct Emerald (7.28×5.39mm, emerald cut). See below how they compare side-by-side on a ring and finger.
| 20ct Ruby (round cut) |
vs
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1ct Emerald (emerald cut) |
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red |
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| 16.23×16.23 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
20ct Ruby Round (16.23×16.23mm, Red)
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, Ruby will face-up smaller than Emerald for a given
carat weight, because it has higher specific gravity
(4 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.
| 20 Ct Ruby (Round) | 1 Ct Emerald (Emerald) | |
| 16.23×16.23 mm | vs | 7.28×5.39 mm |
| 206.88 mm² | 36.49 mm² |
| 20ct Ruby Round (16.23×16.23mm) | |
| 1ct Emerald Emerald (7.28×5.39mm) | |
| Difference: 467% (170.39 mm²) |
20ct Ruby (Round, 16.23×16.23mm) has approx. 467% more face-up area than 1ct Emerald (Emerald, 7.28×5.39mm). In other words, it's 5.67x larger.
Popular comparisons:
- 20ct Ruby (Round, Red, 16.23 x 16.23) vs. 1.25ct Ruby (Cushion, Red, 6.02 x 6.02)
- 20ct Ruby (Round, Red, 16.23 x 16.23) vs. 15ct Ruby (Round, Red, 14.74 x 14.74)
- 20ct Ruby (Round, Red, 16.23 x 16.23) vs. 20ct Diamond (Round, White, 17.64 x 17.64)
- 20ct Ruby (Round, Red, 16.23 x 16.23) vs. 25ct Ruby (Round, Red, 17.48 x 17.48)
- 20ct Ruby (Round, Red, 16.23 x 16.23) vs. 4.3ct Ruby (Cushion, Red, 9.09 x 9.09)
- 20ct Ruby (Round, Red, 16.23 x 16.23) vs. 11.08ct Amethyst (Emerald, Violet, 16.34 x 12.1)
- 20ct Ruby (Round, Red, 16.23 x 16.23) vs. 1ct Emerald (Round, Green, 6.82 x 6.82)
- 20ct Ruby (Round, Red, 16.23 x 16.23) vs. 20ct Emerald (Round, Green, 18.5 x 18.5)