3.1ct Diamond (Round, 9.48×9.48mm, White) vs 2ct Diamond (Round, 8.19×8.19mm, White)
Quick summary: When looked from above (face-up position), 3.1ct Diamond (9.48×9.48mm, round cut) appears 34% larger than 2ct Diamond (8.19×8.19mm, round cut). See below how they compare side-by-side on a ring and finger.
| 3.1ct Diamond (round cut) |
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2ct Diamond (round cut) |
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white |
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| 9.48×9.48 mm | 8.19×8.19 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
3.1ct Diamond Round (9.48×9.48mm, White)
and
2ct Diamond Round (8.19×8.19mm, 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.
| 3.1 Ct Diamond (Round) | 2 Ct Diamond (Round) | |
| 9.48×9.48 mm | vs | 8.19×8.19 mm |
| 70.58 mm² | 52.68 mm² |
| 3.1ct Diamond Round (9.48×9.48mm) | |
| 2ct Diamond Round (8.19×8.19mm) | |
| Difference: 34% (17.9 mm²) |
3.1ct Diamond (Round, 9.48×9.48mm) has approx. 34% more face-up area than 2ct Diamond (Round, 8.19×8.19mm).
Popular comparisons:
- 3.1ct Diamond (Round, White, 9.48 x 9.48) vs. 3.6ct Diamond (Round, White, 9.96 x 9.96)
- 3.1ct Diamond (Round, White, 9.48 x 9.48) vs. 3ct Diamond (Emerald, White, 9.64 x 7.14)
- 3.1ct Diamond (Round, White, 9.48 x 9.48) vs. 5ct Diamond (Emerald, White, 11.42 x 8.46)
- 3.1ct Diamond (Round, White, 9.48 x 9.48) vs. 3.5ct Sapphire (Round, Blue, 9.08 x 9.08)
- 3.1ct Diamond (Round, White, 9.48 x 9.48) vs. 3.1ct Sapphire (Round, Blue, 8.72 x 8.72)
- 3.1ct Diamond (Round, White, 9.48 x 9.48) vs. 2.7ct Tanzanite (Cushion, Blue, 8.2 x 7.2)
- 3.1ct Diamond (Round, White, 9.48 x 9.48) vs. 2.13ct Diamond (Round, White, 8.36 x 8.36)
- 0.1ct Diamond (Round, White, 3.02 x 3.02) vs. 0.15ct Diamond (Round, White, 3.45 x 3.45)