13ct Diaspore (Heart, 15.53×15.53mm, Light Yellowish Green) vs 13ct Alexandrite (Heart, 15.06×15.06mm, Bluish Green)
Quick summary: When looked from above (face-up position), 13ct Diaspore (15.53×15.53mm, heart cut) appears 6% larger than 13ct Alexandrite (15.06×15.06mm, heart cut). See below how they compare side-by-side on a ring and finger.
| 13ct Diaspore (heart cut) |
vs
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13ct Alexandrite (heart cut) |
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light yellowish green |
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| 15.53×15.53 mm | 15.06×15.06 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 Diaspore Heart (15.53×15.53mm, Light Yellowish Green)
and
13ct Alexandrite Heart (15.06×15.06mm, Bluish Green)
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, Alexandrite will face-up smaller than Diaspore for a given
carat weight, because it has higher specific gravity
(3.73 vs. 3.4 - this means it's "heavier" compared to Diaspore 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 Diaspore (Heart) | 13 Ct Alexandrite (Heart) | |
| 15.53×15.53 mm | vs | 15.06×15.06 mm |
| 173.65 mm² | 163.3 mm² |
| 13ct Diaspore Heart (15.53×15.53mm) | |
| 13ct Alexandrite Heart (15.06×15.06mm) | |
| Difference: 6% (10.35 mm²) |
13ct Diaspore (Heart, 15.53×15.53mm) has approx. 6% more face-up area than 13ct Alexandrite (Heart, 15.06×15.06mm).
Popular comparisons:
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- 1ct Sapphire (Baguette, Blue, 6.93 x 4.62) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Topaz (Round, Blue, 6 x 6) vs. 0.5ct Topaz (Round, Blue, 5 x 5)