12ct Ruby (Oval, 17.31×11.54mm, Red) vs 12ct Emerald (Emerald, 17.31×11.54mm, Green)
Quick summary: When looked from above (face-up position), 12ct Emerald (17.31×11.54mm, emerald cut) appears 13% larger than 12ct Ruby (17.31×11.54mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 12ct Ruby (oval cut) |
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12ct Emerald (emerald cut) |
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red |
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| 17.31×11.54 mm | 17.31×11.54 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
12ct Ruby Oval (17.31×11.54mm, Red)
and
12ct Emerald Emerald (17.31×11.54mm, 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.
| 12 Ct Ruby (Oval) | 12 Ct Emerald (Emerald) | |
| 17.31×11.54 mm | vs | 17.31×11.54 mm |
| 163.8 mm² | 185.77 mm² |
| 12ct Ruby Oval (17.31×11.54mm) | |
| 12ct Emerald Emerald (17.31×11.54mm) | |
| Difference: 13% (21.97 mm²) |
12ct Emerald (Emerald, 17.31×11.54mm) has approx. 13% more face-up area than 12ct Ruby (Oval, 17.31×11.54mm).
Popular comparisons:
- 12ct Ruby (Oval, Red, 17.31 x 11.54) vs. 12ct Emerald (Oval, Green, 19.74 x 13.16)
- 12ct Ruby (Oval, Red, 17.31 x 11.54) vs. 12ct Ruby (Cushion, Red, 12.8 x 12.8)
- 12ct Ruby (Oval, Red, 17.31 x 11.54) vs. 5ct Sapphire (Oval, Blue, 12.93 x 8.62)
- 12ct Ruby (Oval, Red, 17.31 x 11.54) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 12ct Ruby (Oval, Red, 17.31 x 11.54) vs. 5.5ct Emerald (Emerald, Green, 12.85 x 9.52)
- 12ct Ruby (Oval, Red, 17.31 x 11.54) vs. 12ct Ruby (Round, Red, 13.69 x 13.69)
- 4ct Ruby (Oval, Red, 11 x 8.15) vs. 2.75ct Diamond (Oval, White, 11.37 x 7.58)
- 2ct Ruby (Oval, Red, 9.53 x 6.35) vs. 1.13ct Diamond (Round, White, 6.77 x 6.77)