15ct Ruby (Cushion, 13.79×13.79mm, Red) vs 25ct Emerald (Emerald, 21.29×15.77mm, Green)
Quick summary: When looked from above (face-up position), 25ct Emerald (21.29×15.77mm, emerald cut) appears 82% larger than 15ct Ruby (13.79×13.79mm, cushion cut). See below how they compare side-by-side on a ring and finger.
| 15ct Ruby (cushion cut) |
vs
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25ct Emerald (emerald cut) |
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red |
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| 13.79×13.79 mm | 21.29×15.77 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 Cushion (13.79×13.79mm, Red)
and
25ct Emerald Emerald (21.29×15.77mm, 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 (Cushion) | 25 Ct Emerald (Emerald) | |
| 13.79×13.79 mm | vs | 21.29×15.77 mm |
| 171.15 mm² | 312.24 mm² |
| 15ct Ruby Cushion (13.79×13.79mm) | |
| 25ct Emerald Emerald (21.29×15.77mm) | |
| Difference: 82% (141.09 mm²) |
25ct Emerald (Emerald, 21.29×15.77mm) has approx. 82% more face-up area than 15ct Ruby (Cushion, 13.79×13.79mm).
Popular comparisons:
- 15ct Ruby (Cushion, Red, 13.79 x 13.79) vs. 14ct Ruby (Cushion, Red, 13.48 x 13.48)
- 15ct Ruby (Cushion, Red, 13.79 x 13.79) vs. 14ct Ruby (Emerald, Red, 15.39 x 11.4)
- 15ct Ruby (Cushion, Red, 13.79 x 13.79) vs. 14ct Ruby (Baguette, Red, 16.71 x 11.14)
- 15ct Ruby (Cushion, Red, 13.79 x 13.79) vs. 14ct Ruby (Marquise, Red, 23.78 x 11.89)
- 15ct Ruby (Cushion, Red, 13.79 x 13.79) vs. 15ct Chrysoberyl (Cushion, Light Yellowish Green, 14.15 x 14.15)
- 0.45ct Ruby (Cushion, Red, 4.28 x 4.28) vs. 0.33ct Sapphire (Trillion, Blue, 4.86 x 4.86)
- 3.45ct Ruby (Cushion, Red, 8.45 x 8.45) vs. 1ct Emerald (Cushion, Green, 6.37 x 6.37)
- 3ct Ruby (Cushion, Red, 8.06 x 8.06) vs. 5ct Ruby (Round, Red, 10.22 x 10.22)