1ct Diamond (Round, 6.5×6.5mm, White) vs 0.91ct Moissanite (Round, 6.5×6.5mm, White)
Quick summary: Compared gemstones have equal face-up area.
| 1ct Diamond (round cut) |
vs
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0.91ct Moissanite (round cut) |
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white |
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| 6.5×6.5 mm | 6.5×6.5 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
1ct Diamond Round (6.5×6.5mm, White)
and
0.91ct Moissanite Round (6.5×6.5mm, 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
All things being equal, Diamond will face-up smaller than Moissanite for a given
carat weight, because it has higher specific gravity
(3.52 vs. 3.22 - this means it's "heavier" compared to Moissanite 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.
| 1 Ct Diamond (Round) | 0.91 Ct Moissanite (Round) | |
| 6.5×6.5 mm | vs | 6.5×6.5 mm |
| 33.18 mm² | 33.18 mm² |

| 1ct Diamond Round (6.5×6.5mm) | |
| 0.91ct Moissanite Round (6.5×6.5mm) | |
| Difference: 0% (0 mm²) |
1ct Diamond (Round, 6.5×6.5mm) and 0.91ct Moissanite (Round, 6.5×6.5mm) have the same face-up area.
Popular comparisons:
- 1ct Diamond (Round, White, 6.5 x 6.5) vs. 1.25ct Diamond (Round, White, 7 x 7)
- 1ct Diamond (Round, White, 6.5 x 6.5) vs. 1ct Diamond (Emerald, White, 6.68 x 4.95)
- 1ct Diamond (Round, White, 6.5 x 6.5) vs. 1.5ct Diamond (Round, White, 7.44 x 7.44)
- 1ct Diamond (Round, White, 6.5 x 6.5) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Diamond (Round, White, 6.5 x 6.5) vs. 1.3ct Diamond (Round, White, 7.09 x 7.09)
- 1ct Diamond (Round, White, 6.5 x 6.5) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 1ct Diamond (Round, White, 6.5 x 6.5) vs. 1ct Diamond (Oval, White, 8.12 x 5.41)
- 1ct Diamond (Round, White, 6.5 x 6.5) vs. 1.1ct Diamond (Round, White, 6.71 x 6.71)
Use the simulator on this page to play around with different ring and finger configurations.