15ct Ruby (Emerald, 15.75×11.67mm, Red) vs 20ct Emerald (Emerald, 19.76×14.64mm, Green)
Quick summary: When looked from above (face-up position), 20ct Emerald (19.76×14.64mm, emerald cut) appears 57% larger than 15ct Ruby (15.75×11.67mm, emerald cut). See below how they compare side-by-side on a ring and finger.
| 15ct Ruby (emerald cut) |
vs
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20ct Emerald (emerald cut) |
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red |
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| 15.75×11.67 mm | 19.76×14.64 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
15ct Ruby Emerald (15.75×11.67mm, Red)
and
20ct Emerald Emerald (19.76×14.64mm, 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.
| 15 Ct Ruby (Emerald) | 20 Ct Emerald (Emerald) | |
| 15.75×11.67 mm | vs | 19.76×14.64 mm |
| 170.94 mm² | 269.04 mm² |
| 15ct Ruby Emerald (15.75×11.67mm) | |
| 20ct Emerald Emerald (19.76×14.64mm) | |
| Difference: 57% (98.1 mm²) |
20ct Emerald (Emerald, 19.76×14.64mm) has approx. 57% more face-up area than 15ct Ruby (Emerald, 15.75×11.67mm).
Popular comparisons:
- 15ct Ruby (Emerald, Red, 15.75 x 11.67) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 15ct Ruby (Emerald, Red, 15.75 x 11.67) vs. 3ct Sapphire (Emerald, Blue, 9.21 x 6.82)
- 15ct Ruby (Emerald, Red, 15.75 x 11.67) vs. 14ct Ruby (Oval, Red, 18.23 x 12.15)
- 15ct Ruby (Emerald, Red, 15.75 x 11.67) vs. 10ct Emerald (Emerald, Green, 15.69 x 11.62)
- 15ct Ruby (Emerald, Red, 15.75 x 11.67) vs. 11ct Ruby (Emerald, Red, 14.2 x 10.52)
- 15ct Ruby (Emerald, Red, 15.75 x 11.67) vs. 5ct Ruby (Emerald, Red, 10.92 x 8.09)
- 15ct Ruby (Emerald, Red, 15.75 x 11.67) vs. 20ct Ruby (Emerald, Red, 17.33 x 12.84)
- 15ct Ruby (Emerald, Red, 15.75 x 11.67) vs. 14ct Ruby (Emerald, Red, 15.39 x 11.4)