1ct Diamond (Marquise, 10.38×5.19mm, White) vs 1ct Alexandrite (Marquise, 10.12×5.06mm, Bluish Green)
Quick summary: When looked from above (face-up position), 1ct Diamond (10.38×5.19mm, marquise cut) appears 5% larger than 1ct Alexandrite (10.12×5.06mm, marquise cut). See below how they compare side-by-side on a ring and finger.
| 1ct Diamond (marquise cut) |
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1ct Alexandrite (marquise cut) |
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| 10.38×5.19 mm | 10.12×5.06 mm | |
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Actual sizes of
1ct Diamond Marquise (10.38×5.19mm, White)
and
1ct Alexandrite Marquise (10.12×5.06mm, 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 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 Ct Diamond (Marquise) | 1 Ct Alexandrite (Marquise) | |
| 10.38×5.19 mm | vs | 10.12×5.06 mm |
| 38.25 mm² | 36.36 mm² |
| 1ct Diamond Marquise (10.38×5.19mm) | |
| 1ct Alexandrite Marquise (10.12×5.06mm) | |
| Difference: 5% (1.89 mm²) |
1ct Diamond Marquise (10.38×5.19mm) has approx. 5% more face-up area than 1ct Alexandrite Marquise (10.12×5.06mm).
Popular comparisons:
- 1ct Diamond (Marquise, White, 10.38 x 5.19) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Diamond (Marquise, White, 10.38 x 5.19) vs. 1.5ct Diamond (Marquise, White, 11.9 x 5.95)
- 1ct Diamond (Marquise, White, 10.38 x 5.19) vs. 1ct Diamond (Emerald, White, 6.68 x 4.95)
- 1ct Diamond (Marquise, White, 10.38 x 5.19) vs. 2ct Diamond (Marquise, White, 13.08 x 6.54)
- 1ct Diamond (Marquise, White, 10.38 x 5.19) vs. 0.75ct Diamond (Marquise, White, 9.44 x 4.72)
- 1ct Diamond (Marquise, White, 10.38 x 5.19) vs. 1ct Diamond (Oval, White, 8.12 x 5.41)
- 1ct Diamond (Marquise, White, 10.38 x 5.19) vs. 1ct Sapphire (Marquise, Blue, 9.88 x 4.94)
- 1ct Diamond (Marquise, White, 10.38 x 5.19) vs. 0.5ct Diamond (Marquise, White, 8.24 x 4.12)
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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.