13ct Tanzanite (Round, 14.91×14.91mm, Blue) vs 13ct Aquamarine (Round, 15.99×15.99mm, Light Blue)
Quick summary: When looked from above (face-up position), 13ct Aquamarine (15.99×15.99mm, round cut) appears 15% larger than 13ct Tanzanite (14.91×14.91mm, round cut). See below how they compare side-by-side on a ring and finger.
| 13ct Tanzanite (round cut) |
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13ct Aquamarine (round cut) |
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blue |
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| 14.91×14.91 mm | 15.99×15.99 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 Tanzanite Round (14.91×14.91mm, Blue)
and
13ct Aquamarine Round (15.99×15.99mm, Light Blue)
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, Tanzanite will face-up smaller than Aquamarine for a given
carat weight, because it has higher specific gravity
(3.35 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 Tanzanite (Round) | 13 Ct Aquamarine (Round) | |
| 14.91×14.91 mm | vs | 15.99×15.99 mm |
| 174.6 mm² | 200.81 mm² |
| 13ct Tanzanite Round (14.91×14.91mm) | |
| 13ct Aquamarine Round (15.99×15.99mm) | |
| Difference: 15% (26.21 mm²) |
13ct Aquamarine (Round, 15.99×15.99mm) has approx. 15% more face-up area than 13ct Tanzanite (Round, 14.91×14.91mm).
Popular comparisons:
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Alexandrite (Round, Light Green , 6.14 x 6.14)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 2ct Tanzanite (Round, Dark Blue, 8.03 x 8.03) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 2ct Tanzanite (Round, Blue, 8.03 x 8.03) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 10ct Tanzanite (Round, Blue, 13.73 x 13.73) vs. 10ct Diamond (Round, White, 14 x 14)
- 1.5ct Tanzanite (Round, Blue, 7.3 x 7.3) vs. 1.5ct Diamond (Round, White, 7.44 x 7.44)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Emerald (Round, Green, 6.37 x 6.37)
- 0.7ct Tanzanite (Round, Blue, 5.66 x 5.66) vs. 2.5ct Tanzanite (Round, Blue, 8.65 x 8.65)