1.5ct Alexandrite (Emerald, 7.51×5.56mm, Bluish Green) vs 0.5ct Diamond (Marquise, 8.24×4.12mm, White)
Quick summary: When looked from above (face-up position), 1.5ct Alexandrite (7.51×5.56mm, emerald cut) appears 61% larger than 0.5ct Diamond (8.24×4.12mm, marquise cut). See below how they compare side-by-side on a ring and finger.
| 1.5ct Alexandrite (emerald cut) |
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0.5ct Diamond (marquise cut) |
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bluish green |
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| 7.51×5.56 mm | 8.24×4.12 mm | |
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Actual sizes of
1.5ct Alexandrite Emerald (7.51×5.56mm, Bluish Green)
and
0.5ct Diamond Marquise (8.24×4.12mm, 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
(3.7 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.
| 1.5 Ct Alexandrite (Emerald) | 0.5 Ct Diamond (Marquise) | |
| 7.51×5.56 mm | vs | 8.24×4.12 mm |
| 38.83 mm² | 24.1 mm² |
| 1.5ct Alexandrite Emerald (7.51×5.56mm) | |
| 0.5ct Diamond Marquise (8.24×4.12mm) | |
| Difference: 61% (14.73 mm²) |
1.5ct Alexandrite Emerald (7.51×5.56mm) has approx. 61% more face-up area than 0.5ct Diamond Marquise (8.24×4.12mm).
Popular comparisons:
- 1.5ct Alexandrite (Emerald, Bluish Green, 7.51 x 5.56) vs. 0.5ct Diamond (Emerald, White, 5.31 x 3.93)
- 1.5ct Alexandrite (Emerald, Bluish Green, 7.51 x 5.56) vs. 1.5ct Diamond (Princess, White, 6.31 x 6.31)
- 1.5ct Alexandrite (Emerald, Bluish Green, 7.51 x 5.56) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 29ct Alexandrite (Emerald, Bluish Green, 20 x 15) vs. 7.9ct Alexandrite (Emerald, Bluish Green, 12.2 x 9.8)
- 1ct Alexandrite (Emerald, Bluish Green, 6.55 x 4.85) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 7.05ct Alexandrite (Emerald, Violet, 12 x 10) vs. 5ct Alexandrite (Emerald, Bluish Green, 11 x 9)
- 4.2ct Alexandrite (Emerald, Violet, 10 x 8) vs. 5ct Alexandrite (Emerald, Bluish Green, 11 x 9)
- 29ct Alexandrite (Emerald, Bluish Green, 20 x 15) vs. 10ct Alexandrite (Round, Light Bluish Green, 10 x 15)
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Actual size is currently adjusted to screen.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.