6ct Diamond (Trillion, 14.06×14.06mm, White) vs 21ct Diamond (Round, 17.93×17.93mm, White)
Quick summary: When looked from above (face-up position), 21ct Diamond (17.93×17.93mm, round cut) appears 2.1 times larger than 6ct Diamond (14.06×14.06mm, trillion cut). See below how they compare side-by-side on a ring and finger.
| 6ct Diamond (trillion cut) |
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21ct Diamond (round cut) |
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white |
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| 14.06×14.06 mm | 17.93×17.93 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
6ct Diamond Trillion (14.06×14.06mm, White)
and
21ct Diamond Round (17.93×17.93mm, White)
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
The face-up size depends on the shape of the gem, its weight and 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.
| 6 Ct Diamond (Trillion) | 21 Ct Diamond (Round) | |
| 14.06×14.06 mm | vs | 17.93×17.93 mm |
| 122.56 mm² | 252.49 mm² |
| 6ct Diamond Trillion (14.06×14.06mm) | |
| 21ct Diamond Round (17.93×17.93mm) | |
| Difference: 106% (129.93 mm²) |
21ct Diamond (Round, 17.93×17.93mm) has approx. 106% more face-up area than 6ct Diamond (Trillion, 14.06×14.06mm). In other words, it's 2.06x larger.
Popular comparisons:
- 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)