4ct Amethyst (Baguette, 12.62×8.41mm, Violet) vs 4ct Tanzanite (Baguette, 11.67×7.78mm, Blue)
Quick summary: When looked from above (face-up position), 4ct Amethyst (12.62×8.41mm, baguette cut) appears 17% larger than 4ct Tanzanite (11.67×7.78mm, baguette cut). See below how they compare side-by-side on a ring and finger.
| 4ct Amethyst (baguette cut) |
vs
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4ct Tanzanite (baguette cut) |
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violet |
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| 12.62×8.41 mm | 11.67×7.78 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
4ct Amethyst Baguette (12.62×8.41mm, Violet)
and
4ct Tanzanite Baguette (11.67×7.78mm, 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.
| 4 Ct Amethyst (Baguette) | 4 Ct Tanzanite (Baguette) | |
| 12.62×8.41 mm | vs | 11.67×7.78 mm |
| 106.13 mm² | 90.79 mm² |
| 4ct Amethyst Baguette (12.62×8.41mm) | |
| 4ct Tanzanite Baguette (11.67×7.78mm) | |
| Difference: 17% (15.34 mm²) |
4ct Amethyst (Baguette, 12.62×8.41mm) has approx. 17% more face-up area than 4ct Tanzanite (Baguette, 11.67×7.78mm).
Popular comparisons:
- 1ct Amethyst (Baguette, Violet, 7.95 x 5.3) vs. 1ct Aquamarine (Trillion, Light Blue, 8.01 x 8.01)
- 1.4ct Amethyst (Baguette, Violet, 8.9 x 5.93) vs. 1.4ct Topaz (Baguette, Blue, 8.09 x 5.39)
- 1ct Amethyst (Baguette, Dark Violet, 7.95 x 5.3) vs. 1ct Tanzanite (Emerald, Blue, 6.8 x 5.04)
- 1ct Amethyst (Baguette, Light Violet, 8.49 x 6.03) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 3ct Amethyst (Baguette, Violet, 11.46 x 7.64) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 4.67ct Amethyst (Baguette, Violet, 13.29 x 8.86) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 40ct Amethyst (Baguette, Violet, 27.2 x 18.13) vs. 40ct Aquamarine (Cushion, Light Blue, 21.8 x 21.8)
- 2ct Amethyst (Baguette, Violet, 10.02 x 6.68) vs. 0.12ct Emerald (Emerald, Green, 3.59 x 2.66)
- 6ct Amethyst (Baguette, Violet, 14.45 x 9.63) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)