15ct Aquamarine (Marquise, 27.26×13.63mm, Light Blue) vs 15ct Diamond (Marquise, 25.62×12.81mm, White)
Quick summary: When looked from above (face-up position), 15ct Aquamarine (27.26×13.63mm, marquise cut) appears 13% larger than 15ct Diamond (25.62×12.81mm, marquise cut). See below how they compare side-by-side on a ring and finger.
| 15ct Aquamarine (marquise cut) |
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15ct Diamond (marquise cut) |
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light blue |
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| 27.26×13.63 mm | 25.62×12.81 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
15ct Aquamarine Marquise (27.26×13.63mm, Light Blue)
and
15ct Diamond Marquise (25.62×12.81mm, 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.
| 15 Ct Aquamarine (Marquise) | 15 Ct Diamond (Marquise) | |
| 27.26×13.63 mm | vs | 25.62×12.81 mm |
| 263.8 mm² | 233.02 mm² |
| 15ct Aquamarine Marquise (27.26×13.63mm) | |
| 15ct Diamond Marquise (25.62×12.81mm) | |
| Difference: 13% (30.78 mm²) |
15ct Aquamarine (Marquise, 27.26×13.63mm) has approx. 13% more face-up area than 15ct Diamond (Marquise, 25.62×12.81mm).
Popular comparisons:
- 1ct Aquamarine (Marquise, Light Blue, 11.26 x 5.63) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 7ct Aquamarine (Marquise, Light Blue, 21.52 x 10.76) vs. 7ct Topaz (Marquise, Light Blue, 19.68 x 9.84)
- 2.4ct Aquamarine (Marquise, Light Bluish Green, 15.7 x 7.3) vs. 2.81ct Zircon (Pear, White, 9.3 x 7.4)
- 1ct Aquamarine (Marquise, Light Blue, 12 x 6) vs. 3ct Diamond (Round, White, 9.37 x 9.37)
- 3ct Aquamarine (Marquise, Blue, 16.22 x 8.11) vs. 4ct Aquamarine (Marquise, Blue, 17.86 x 8.93)
- 0.8ct Aquamarine (Marquise, Blue, 10.44 x 5.22) vs. 1ct Diamond (Marquise, Light Violet, 10.38 x 5.19)
- 2.8ct Aquamarine (Marquise, Light Blue, 15.86 x 7.93) vs. 2.8ct Diamond (Marquise, White, 14.64 x 7.32)
- 1ct Aquamarine (Marquise, Light Blue, 11.26 x 5.63) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 3ct Aquamarine (Marquise, Blue, 16.22 x 8.11) vs. 3.5ct Aquamarine (Marquise, Blue, 17.08 x 8.54)