5ct Amethyst (Emerald, 12.53×9.28mm, Violet) vs 7ct Diamond (Emerald, 12.78×9.47mm, White)
Quick summary: When looked from above (face-up position), 7ct Diamond (12.78×9.47mm, emerald cut) appears 4% larger than 5ct Amethyst (12.53×9.28mm, emerald cut). See below how they compare side-by-side on a ring and finger.
| 5ct Amethyst (emerald cut) |
vs
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7ct Diamond (emerald cut) |
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violet |
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| 12.53×9.28 mm | 12.78×9.47 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
5ct Amethyst Emerald (12.53×9.28mm, Violet)
and
7ct Diamond Emerald (12.78×9.47mm, 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, Diamond will face-up smaller than Amethyst for a given
carat weight, because it has higher specific gravity
(3.52 vs. 2.65 - this means it's "heavier" compared to Amethyst 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.
| 5 Ct Amethyst (Emerald) | 7 Ct Diamond (Emerald) | |
| 12.53×9.28 mm | vs | 12.78×9.47 mm |
| 108.14 mm² | 112.55 mm² |
| 5ct Amethyst Emerald (12.53×9.28mm) | |
| 7ct Diamond Emerald (12.78×9.47mm) | |
| Difference: 4% (4.41 mm²) |
7ct Diamond (Emerald, 12.78×9.47mm) has approx. 4% more face-up area than 5ct Amethyst (Emerald, 12.53×9.28mm).
Popular comparisons:
- 5ct Amethyst (Emerald, Violet, 12.53 x 9.28) vs. 10ct Amethyst (Emerald, Violet, 15.78 x 11.69)
- 5ct Amethyst (Emerald, Violet, 12.53 x 9.28) vs. 16ct Amethyst (Emerald, Violet, 18.45 x 13.67)
- 5ct Amethyst (Emerald, Violet, 12.53 x 9.28) vs. 15ct Amethyst (Emerald, Violet, 18.06 x 13.38)
- 5ct Amethyst (Emerald, Violet, 12.53 x 9.28) vs. 40ct Amethyst (Emerald, Violet, 25.06 x 18.56)
- 5ct Amethyst (Emerald, Violet, 12.53 x 9.28) vs. 13ct Amethyst (Emerald, Violet, 17.23 x 12.76)
- 5ct Amethyst (Emerald, Violet, 12.53 x 9.28) vs. 7.5ct Citrine (Pear, Light Orange, 18.64 x 11.23)
- 5ct Amethyst (Emerald, Violet, 12.53 x 9.28) vs. 16ct Amethyst (Emerald, Violet, 13.67 x 18.45)
- 5ct Amethyst (Emerald, Violet, 12.53 x 9.28) vs. 2ct Diamond (Emerald, White, 8.42 x 6.24)