8.5ct Diamond (Marquise, 21.2×10.6mm, White) vs 13.5ct Diamond (Round, 15.48×15.48mm, White)
Quick summary: When looked from above (face-up position), 13.5ct Diamond (15.48×15.48mm, round cut) appears 18% larger than 8.5ct Diamond (21.2×10.6mm, marquise cut). See below how they compare side-by-side on a ring and finger.
| 8.5ct Diamond (marquise cut) |
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13.5ct Diamond (round cut) |
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white |
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| 21.2×10.6 mm | 15.48×15.48 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
8.5ct Diamond Marquise (21.2×10.6mm, White)
and
13.5ct Diamond Round (15.48×15.48mm, 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.
| 8.5 Ct Diamond (Marquise) | 13.5 Ct Diamond (Round) | |
| 21.2×10.6 mm | vs | 15.48×15.48 mm |
| 159.55 mm² | 188.21 mm² |
| 8.5ct Diamond Marquise (21.2×10.6mm) | |
| 13.5ct Diamond Round (15.48×15.48mm) | |
| Difference: 18% (28.66 mm²) |
13.5ct Diamond (Round, 15.48×15.48mm) has approx. 18% more face-up area than 8.5ct Diamond (Marquise, 21.2×10.6mm).
Popular comparisons:
- 8.5ct Diamond (Marquise, White, 21.2 x 10.6) vs. 12ct Diamond (Emerald, White, 15.3 x 11.33)
- 8.5ct Diamond (Marquise, White, 21.2 x 10.6) vs. 8.5ct Diamond (Pear, White, 18.46 x 11.12)
- 0.3ct Diamond (Marquise, White, 7 x 3.5) vs. 0.4ct Diamond (Round, White, 4.79 x 4.79)
- 0.2ct Diamond (Marquise, White, 6.08 x 3.04) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Diamond (Marquise, White, 10.38 x 5.19) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 0.5ct Diamond (Marquise, White, 8.24 x 4.12) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 0.3ct Diamond (Marquise, White, 6.96 x 3.48) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 5ct Diamond (Marquise, White, 16.85 x 9.12) vs. 5ct Diamond (Marquise, White, 16.59 x 8.86)