1.63ct Tanzanite (Marquise, 12.38×6.19mm, Blue) vs 1ct Amethyst (Pear, 9.53×5.74mm, Violet)
Quick summary: When looked from above (face-up position), 1.63ct Tanzanite (12.38×6.19mm, marquise cut) appears 36% larger than 1ct Amethyst (9.53×5.74mm, pear cut). See below how they compare side-by-side on a ring and finger.
| 1.63ct Tanzanite (marquise cut) |
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1ct Amethyst (pear cut) |
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| 12.38×6.19 mm | 9.53×5.74 mm | |
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Actual sizes of
1.63ct Tanzanite Marquise (12.38×6.19mm, Blue)
and
1ct Amethyst Pear (9.53×5.74mm, Violet)
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
(3.3 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.
| 1.63 Ct Tanzanite (Marquise) | 1 Ct Amethyst (Pear) | |
| 12.38×6.19 mm | vs | 9.53×5.74 mm |
| 54.41 mm² | 39.93 mm² |
| 1.63ct Tanzanite Marquise (12.38×6.19mm) | |
| 1ct Amethyst Pear (9.53×5.74mm) | |
| Difference: 36% (14.48 mm²) |
1.63ct Tanzanite Marquise (12.38×6.19mm) has approx. 36% more face-up area than 1ct Amethyst Pear (9.53×5.74mm).
Popular comparisons:
- 1.63ct Tanzanite (Marquise, Blue, 12.38 x 6.19) vs. 1.02ct Amethyst (Pear, Violet, 9.59 x 5.78)
- 1ct Tanzanite (Marquise, Blue, 10.52 x 5.26) vs. 1ct Tanzanite (Marquise, Blue, 10 x 5)
- 1ct Tanzanite (Marquise, Blue, 10.52 x 5.26) vs. 1ct Ruby (Marquise, Red, 9.88 x 4.94)
- 0.6ct Tanzanite (Marquise, Blue, 8.88 x 4.44) vs. 0.9ct Tanzanite (Oval, Blue, 7.79 x 5.19)
- 2ct Tanzanite (Marquise, Blue, 13.26 x 6.63) vs. 2ct Diamond (Marquise, White, 13.08 x 6.54)
- 4.5ct Tanzanite (Marquise, Blue, 17.38 x 8.69) vs. 5ct Tanzanite (Cushion, Blue, 12 x 8)
- 1ct Tanzanite (Marquise, Blue, 12 x 6) vs. 1ct Tanzanite (Marquise, Blue, 10 x 5)
- 1ct Tanzanite (Marquise, Blue, 12 x 6) vs. 1ct Amethyst (Pear, Violet, 9.53 x 5.74)
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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.