20ct Diamond (Trillion, 21×21mm, White) vs 20ct Emerald (Trillion, 22.56×22.56mm, Green)
Quick summary: When looked from above (face-up position), 20ct Emerald (22.56×22.56mm, trillion cut) appears 15% larger than 20ct Diamond (21×21mm, trillion cut). See below how they compare side-by-side on a ring and finger.
| 20ct Diamond (trillion cut) |
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20ct Emerald (trillion cut) |
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white |
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| 21×21 mm | 22.56×22.56 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 Diamond Trillion (21×21mm, White)
and
20ct Emerald Trillion (22.56×22.56mm, 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.
| 20 Ct Diamond (Trillion) | 20 Ct Emerald (Trillion) | |
| 21×21 mm | vs | 22.56×22.56 mm |
| 273.42 mm² | 315.55 mm² |
| 20ct Diamond Trillion (21×21mm) | |
| 20ct Emerald Trillion (22.56×22.56mm) | |
| Difference: 15% (42.13 mm²) |
20ct Emerald (Trillion, 22.56×22.56mm) has approx. 15% more face-up area than 20ct Diamond (Trillion, 21×21mm).
Popular comparisons:
- 20ct Diamond (Trillion, White, 21 x 21) vs. 1ct Emerald (Round, Green, 6.82 x 6.82)
- 0.5ct Diamond (Trillion, White, 6.14 x 6.14) vs. 0.25ct Diamond (Trillion, White, 4.87 x 4.87)
- 0.5ct Diamond (Trillion, White, 6.14 x 6.14) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 0.61ct Diamond (Trillion, Purple, 5.32 x 6.44) vs. 0.58ct Diamond (Pear, Dark Purple, 4.99 x 6.84)
- 0.3ct Diamond (Trillion, White, 5.18 x 5.18) vs. 0.4ct Diamond (Round, White, 4.79 x 4.79)
- 0.27ct Diamond (Trillion, White, 5 x 5) vs. 2.24ct Morganite (Oval, Light Purple, 11 x 7)
- 1ct Diamond (Trillion, White, 7.74 x 7.74) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 0.5ct Diamond (Trillion, White, 6.14 x 6.14) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Diamond (Trillion, White, 7.74 x 7.74) vs. 1ct Diamond (Round, White, 6.5 x 6.5)