19ct Amethyst (Emerald, 19.55×14.48mm, Violet) vs 19ct Alexandrite (Emerald, 17.44×12.92mm, Bluish Green)
Quick summary: When looked from above (face-up position), 19ct Amethyst (19.55×14.48mm, emerald cut) appears 26% larger than 19ct Alexandrite (17.44×12.92mm, emerald cut). See below how they compare side-by-side on a ring and finger.
| 19ct Amethyst (emerald cut) |
vs
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19ct Alexandrite (emerald cut) |
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violet |
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| 19.55×14.48 mm | 17.44×12.92 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
19ct Amethyst Emerald (19.55×14.48mm, Violet)
and
19ct Alexandrite Emerald (17.44×12.92mm, 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 Amethyst for a given
carat weight, because it has higher specific gravity
(3.73 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.
| 19 Ct Amethyst (Emerald) | 19 Ct Alexandrite (Emerald) | |
| 19.55×14.48 mm | vs | 17.44×12.92 mm |
| 263.27 mm² | 209.55 mm² |
| 19ct Amethyst Emerald (19.55×14.48mm) | |
| 19ct Alexandrite Emerald (17.44×12.92mm) | |
| Difference: 26% (53.72 mm²) |
19ct Amethyst (Emerald, 19.55×14.48mm) has approx. 26% more face-up area than 19ct Alexandrite (Emerald, 17.44×12.92mm).
Popular comparisons:
- 15ct Amethyst (Emerald, Violet, 18.06 x 13.38) vs. 20ct Citrine (Cushion, Yellow, 17.41 x 17.41)
- 40ct Amethyst (Emerald, Violet, 25.06 x 18.56) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 2ct Amethyst (Emerald, Violet, 9.23 x 6.84) vs. 2ct Diamond (Emerald, White, 8.42 x 6.24)
- 23ct Amethyst (Emerald, Light Purple, 20.08 x 16.15) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 9.5ct Amethyst (Emerald, Violet, 15.51 x 11.49) vs. 4ct Diamond (Cushion, White, 9.25 x 9.25)
- 15ct Amethyst (Emerald, Violet, 18.06 x 13.38) vs. 20ct Citrine (Cushion, Light Yellow, 17.41 x 17.41)
- 1.5ct Amethyst (Emerald, Dark Violet, 8 x 6) vs. 2.62ct Sapphire (Cushion, Dark Yellowish Green, 9.08 x 7.09)
- 2ct Amethyst (Emerald, Violet, 9.23 x 6.84) vs. 2ct Amethyst (Oval, Violet, 10.94 x 7.29)
- 11ct Amethyst (Emerald, Violet, 16.29 x 12.07) vs. 2ct Citrine (Trillion, Light Orange, 10.16 x 10.16)