3ct Diamond (Round, 9.37×9.37mm, Black) vs 1.9ct Diamond (Marquise, 12×6mm, Dark Red)
Quick summary: When looked from above (face-up position), 3ct Diamond (9.37×9.37mm, round cut) appears 35% larger than 1.9ct Diamond (12×6mm, marquise cut). See below how they compare side-by-side on a ring and finger.
| 3ct Diamond (round cut) |
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1.9ct Diamond (marquise cut) |
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black |
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| 9.37×9.37 mm | 12×6 mm | |
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Actual sizes of
3ct Diamond Round (9.37×9.37mm, Black)
and
1.9ct Diamond Marquise (12×6mm, Dark Red)
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 Ct Diamond (Round) | 1.9 Ct Diamond (Marquise) | |
| 9.37×9.37 mm | vs | 12×6 mm |
| 68.96 mm² | 51.12 mm² |
| 3ct Diamond Round (9.37×9.37mm) | |
| 1.9ct Diamond Marquise (12×6mm) | |
| Difference: 35% (17.84 mm²) |
3ct Diamond Round (9.37×9.37mm) has approx. 35% more face-up area than 1.9ct Diamond Marquise (12×6mm).
Popular comparisons:
- 3ct Diamond (Round, Black, 9.37 x 9.37) vs. 1.2ct Sapphire (Oval, Dark Purple, 8 x 6)
- 3ct Diamond (Round, Black, 9.37 x 9.37) vs. 3.06ct Sapphire (Trillion, White, 10.2 x 10.2)
- 3ct Diamond (Round, Black, 9.37 x 9.37) vs. 5.4ct Sapphire (Emerald, Light Yellow, 11.21 x 8.3)
- 3ct Diamond (Round, Black, 9.37 x 9.37) vs. 3.06ct Emerald (Trillion, Green, 11.63 x 11.63)
- 3ct Diamond (Round, Black, 9.37 x 9.37) vs. 1.2ct Sapphire (Oval, Blue, 8 x 6)
- 3ct Diamond (Round, Black, 9.37 x 9.37) vs. 1.2ct Sapphire (Emerald, Blue, 6.79 x 5.03)
- 3ct Diamond (Round, Black, 9.37 x 9.37) vs. 3ct Tourmaline (Round, Yellow, 9.39 x 9.39)
- 3ct Diamond (Round, Black, 9.37 x 9.37) vs. 3.06ct Sapphire (Emerald, White, 9.27 x 6.87)
Enter your screen size (diagonal)
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Actual size is currently adjusted to screen.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.