3ct Aquamarine (Cushion, 9.19×9.19mm, Light Blue) vs 3ct Diamond (Cushion, 8.4×8.4mm, White)
Quick summary: When looked from above (face-up position), 3ct Aquamarine (9.19×9.19mm, cushion cut) appears 20% larger than 3ct Diamond (8.4×8.4mm, cushion cut). See below how they compare side-by-side on a ring and finger.
| 3ct Aquamarine (cushion cut) |
vs
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3ct Diamond (cushion cut) |
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light blue |
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| 9.19×9.19 mm | 8.4×8.4 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
3ct Aquamarine Cushion (9.19×9.19mm, Light Blue)
and
3ct Diamond Cushion (8.4×8.4mm, 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 Aquamarine for a given
carat weight, because it has higher specific gravity
(3.52 vs. 2.72 - this means it's "heavier" compared to Aquamarine 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.
| 3 Ct Aquamarine (Cushion) | 3 Ct Diamond (Cushion) | |
| 9.19×9.19 mm | vs | 8.4×8.4 mm |
| 76.01 mm² | 63.5 mm² |
| 3ct Aquamarine Cushion (9.19×9.19mm) | |
| 3ct Diamond Cushion (8.4×8.4mm) | |
| Difference: 20% (12.51 mm²) |
3ct Aquamarine (Cushion, 9.19×9.19mm) has approx. 20% more face-up area than 3ct Diamond (Cushion, 8.4×8.4mm).
Popular comparisons:
- 3ct Aquamarine (Cushion, Light Blue, 9.19 x 9.19) vs. 3ct Emerald (Emerald, Green, 10.5 x 7.78)
- 3ct Aquamarine (Cushion, Light Blue, 9.19 x 9.19) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 3ct Aquamarine (Cushion, Light Blue, 9.19 x 9.19) vs. 5ct Aquamarine (Cushion, Light Blue, 10.9 x 10.9)
- 3ct Aquamarine (Cushion, Light Blue, 9.19 x 9.19) vs. 3ct Diamond (Emerald, White, 9.64 x 7.14)
- 3ct Aquamarine (Cushion, Light Blue, 9.19 x 9.19) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 3ct Aquamarine (Cushion, Light Blue, 9.19 x 9.19) vs. 3ct Diamond (Cabochon, White, 10.31 x 6.87)
- 3ct Aquamarine (Cushion, Light Blue, 9.19 x 9.19) vs. 3ct Emerald (Trillion, Green, 11.56 x 11.56)
- 3ct Aquamarine (Cushion, Light Blue, 9.19 x 9.19) vs. 1ct Diamond (Cushion, White, 5.83 x 5.83)