13ct Aquamarine (Trillion, 19.55×19.55mm, Light Blue) vs 13ct Diamond (Trillion, 18.19×18.19mm, White)
Quick summary: When looked from above (face-up position), 13ct Aquamarine (19.55×19.55mm, trillion cut) appears 16% larger than 13ct Diamond (18.19×18.19mm, trillion cut). See below how they compare side-by-side on a ring and finger.
| 13ct Aquamarine (trillion cut) |
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13ct Diamond (trillion cut) |
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light blue |
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| 19.55×19.55 mm | 18.19×18.19 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
13ct Aquamarine Trillion (19.55×19.55mm, Light Blue)
and
13ct Diamond Trillion (18.19×18.19mm, 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.
| 13 Ct Aquamarine (Trillion) | 13 Ct Diamond (Trillion) | |
| 19.55×19.55 mm | vs | 18.19×18.19 mm |
| 236.97 mm² | 205.14 mm² |
| 13ct Aquamarine Trillion (19.55×19.55mm) | |
| 13ct Diamond Trillion (18.19×18.19mm) | |
| Difference: 16% (31.83 mm²) |
13ct Aquamarine (Trillion, 19.55×19.55mm) has approx. 16% more face-up area than 13ct Diamond (Trillion, 18.19×18.19mm).
Popular comparisons:
- 4ct Aquamarine (Trillion, Light Blue, 12.72 x 12.72) vs. 1.35ct Aquamarine (Trillion, Light Blue, 8.86 x 8.86)
- 1.3ct Aquamarine (Trillion, Light Blue, 8 x 8) vs. 1.5ct Aquamarine (Round, Light Blue, 7.8 x 7.8)
- 7ct Aquamarine (Trillion, Light Blue, 15.33 x 15.33) vs. 7ct Diamond (Round, White, 12.43 x 12.43)
- 7ct Aquamarine (Trillion, Light Blue, 14 x 14) vs. 7ct Diamond (Round, White, 12.43 x 12.43)
- 1.3ct Aquamarine (Trillion, Light Blue, 8.74 x 8.74) vs. 1.5ct Aquamarine (Round, Light Blue, 7.8 x 7.8)
- 1ct Aquamarine (Trillion, Bluish Green, 8.01 x 8.01) vs. 1ct Diamond (Baguette, White, 7.23 x 4.82)
- 5ct Aquamarine (Trillion, Light Blue, 13.7 x 13.7) vs. 5ct Topaz (Trillion, Blue, 12.53 x 12.53)
- 1ct Aquamarine (Trillion, Light Blue, 8.01 x 8.01) vs. 1ct Diamond (Trillion, White, 7.74 x 7.74)
- 1ct Aquamarine (Trillion, Light Blue, 8.01 x 8.01) vs. 1ct Sapphire (Trillion, Light Blue, 7.03 x 7.03)