1ct Alexandrite (Emerald, 6.7×4.5mm, Bluish Green) vs 1ct Diamond (Emerald, 6.68×4.95mm, White)
Quick summary: When looked from above (face-up position), 1ct Diamond (6.68×4.95mm, emerald cut) appears 10% larger than 1ct Alexandrite (6.7×4.5mm, emerald cut). See below how they compare side-by-side on a ring and finger.
| 1ct Alexandrite (emerald cut) |
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1ct Diamond (emerald cut) |
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bluish green |
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| 6.7×4.5 mm | 6.68×4.95 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
1ct Alexandrite Emerald (6.7×4.5mm, Bluish Green)
and
1ct Diamond Emerald (6.68×4.95mm, 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.
| 1 Ct Alexandrite (Emerald) | 1 Ct Diamond (Emerald) | |
| 6.7×4.5 mm | vs | 6.68×4.95 mm |
| 28.04 mm² | 30.75 mm² |
| 1ct Alexandrite Emerald (6.7×4.5mm) | |
| 1ct Diamond Emerald (6.68×4.95mm) | |
| Difference: 10% (2.71 mm²) |
1ct Diamond (Emerald, 6.68×4.95mm) has approx. 10% more face-up area than 1ct Alexandrite (Emerald, 6.7×4.5mm).
Popular comparisons:
- 1ct Alexandrite (Emerald, Bluish Green, 6.7 x 4.5) vs. 0.84ct Diamond (Princess, White, 5.4 x 5.5)
- 1ct Alexandrite (Emerald, Bluish Green, 6.7 x 4.5) vs. 0.8ct Diamond (Round, White, 6.03 x 6.03)
- 1ct Alexandrite (Emerald, Bluish Green, 6.7 x 4.5) vs. 1ct Alexandrite (Cushion, Bluish Green, 6.7 x 4.5)
- 1ct Alexandrite (Emerald, Bluish Green, 6.7 x 4.5) vs. 1ct Alexandrite (Emerald, Bluish Green, 6.55 x 4.85)
- 1ct Alexandrite (Emerald, Bluish Green, 6.7 x 4.5) vs. 1ct Ruby (Emerald, Red, 6.39 x 4.73)
- 1ct Alexandrite (Emerald, Bluish Green, 6.7 x 4.5) vs. 1ct Diamond (Cushion, White, 5.83 x 5.83)
- 1ct Alexandrite (Emerald, Bluish Green, 6.7 x 4.5) vs. 1ct Diamond (Princess, White, 5.51 x 5.51)
- 29ct Alexandrite (Emerald, Bluish Green, 20 x 15) vs. 7.9ct Alexandrite (Emerald, Bluish Green, 12.2 x 9.8)