3.5ct Amethyst (Round, 10.41×10.41mm, Violet) vs 3.5ct Tanzanite (Round, 9.63×9.63mm, Blue)
Quick summary: When looked from above (face-up position), 3.5ct Amethyst (10.41×10.41mm, round cut) appears 17% larger than 3.5ct Tanzanite (9.63×9.63mm, round cut). See below how they compare side-by-side on a ring and finger.
| 3.5ct Amethyst (round cut) |
vs
|
3.5ct Tanzanite (round cut) |
|
violet |
|
|
| 10.41×10.41 mm | 9.63×9.63 mm | |
| actual size | ||
|
|
|
|
|
||
Actual size is set for screen
|
Ring:
Skin tone:
Ring width: 3.0 mm
|
|
64 mm |
|
|
|||||||||||||||||
|
|||||||||||||||||||||
Actual sizes of
3.5ct Amethyst Round (10.41×10.41mm, Violet)
and
3.5ct Tanzanite Round (9.63×9.63mm, Blue)
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, Tanzanite will face-up smaller than Amethyst for a given
carat weight, because it has higher specific gravity
(3.35 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.
| 3.5 Ct Amethyst (Round) | 3.5 Ct Tanzanite (Round) | |
| 10.41×10.41 mm | vs | 9.63×9.63 mm |
| 85.11 mm² | 72.84 mm² |
| 3.5ct Amethyst Round (10.41×10.41mm) | |
| 3.5ct Tanzanite Round (9.63×9.63mm) | |
| Difference: 17% (12.27 mm²) |
3.5ct Amethyst (Round, 10.41×10.41mm) has approx. 17% more face-up area than 3.5ct Tanzanite (Round, 9.63×9.63mm).
Popular comparisons:
- 3.5ct Amethyst (Round, Violet, 10.41 x 10.41) vs. 3.5ct Diamond (Round, White, 9.87 x 9.87)
- 3.5ct Amethyst (Round, Violet, 10.41 x 10.41) vs. 1ct Amethyst (Round, Violet, 6.86 x 6.86)
- 1ct Amethyst (Round, Violet, 6.86 x 6.86) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1ct Amethyst (Round, Violet, 6.86 x 6.86) vs. 1ct Tanzanite (Emerald, Blue, 6.8 x 5.04)
- 2ct Amethyst (Round, Violet, 8.64 x 8.64) vs. 2ct Amethyst (Oval, Violet, 10.94 x 7.29)
- 1ct Amethyst (Round, Violet, 6.86 x 6.86) vs. 1ct Tanzanite (Round, Blue, 6.37 x 6.37)
- 8ct Amethyst (Round, Violet, 13.72 x 13.72) vs. 8ct Emerald (Emerald, Green, 14.55 x 10.78)
- 1ct Amethyst (Round, Violet, 6.86 x 6.86) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Amethyst (Round, Violet, 6.86 x 6.86) vs. 1ct Zircon (Round, Orange, 5.67 x 5.67)