4ct Alexandrite (Pear, 13.53×8.15mm, Bluish Green) vs 4ct Diamond (Pear, 14.36×8.65mm, White)
Quick summary: When looked from above (face-up position), 4ct Diamond (14.36×8.65mm, pear cut) appears 13% larger than 4ct Alexandrite (13.53×8.15mm, pear cut). See below how they compare side-by-side on a ring and finger.
| 4ct Alexandrite (pear cut) |
vs
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4ct Diamond (pear cut) |
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bluish green |
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| 13.53×8.15 mm | 14.36×8.65 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
4ct Alexandrite Pear (13.53×8.15mm, Bluish Green)
and
4ct Diamond Pear (14.36×8.65mm, 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, Alexandrite will face-up smaller than Diamond for a given
carat weight, because it has higher specific gravity
(3.73 vs. 3.52 - this means it's "heavier" compared to Diamond 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.
| 4 Ct Alexandrite (Pear) | 4 Ct Diamond (Pear) | |
| 13.53×8.15 mm | vs | 14.36×8.65 mm |
| 80.5 mm² | 90.68 mm² |
| 4ct Alexandrite Pear (13.53×8.15mm) | |
| 4ct Diamond Pear (14.36×8.65mm) | |
| Difference: 13% (10.18 mm²) |
4ct Diamond (Pear, 14.36×8.65mm) has approx. 13% more face-up area than 4ct Alexandrite (Pear, 13.53×8.15mm).
Popular comparisons:
- 4ct Alexandrite (Pear, Bluish Green, 13.53 x 8.15) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 4ct Alexandrite (Pear, Bluish Green, 13.53 x 8.15) vs. 4ct Emerald (Emerald, Dark Green, 11.56 x 8.56)
- 4ct Alexandrite (Pear, Bluish Green, 13.53 x 8.15) vs. 4ct Sapphire (Pear, Blue, 13.18 x 7.94)
- 4ct Alexandrite (Pear, Bluish Green, 13.53 x 8.15) vs. 3ct Diamond (Pear, White, 13.05 x 7.86)
- 4ct Alexandrite (Pear, Bluish Green, 13.53 x 8.15) vs. 2ct Amethyst (Pear, Violet, 12 x 7.23)
- 1ct Alexandrite (Pear, Bluish Green, 8.52 x 5.13) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 0.42ct Alexandrite (Pear, Dark Purple, 6 x 4) vs. 0.5ct Alexandrite (Pear, Dark Purple, 7 x 5)
- 2ct Alexandrite (Pear, Violet, 11 x 7) vs. 1.54ct Diamond (Oval, Bluish Green, 9.65 x 6.42)