1.7ct Tourmaline (Emerald, 9×6mm, Dark Green) vs 3ct Topaz (Emerald, 10×8mm, Blue)
Quick summary: When looked from above (face-up position), 3ct Topaz (10×8mm, emerald cut) appears 48% larger than 1.7ct Tourmaline (9×6mm, emerald cut). See below how they compare side-by-side on a ring and finger.
| 1.7ct Tourmaline (emerald cut) |
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3ct Topaz (emerald cut) |
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dark green |
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| 9×6 mm | 10×8 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
1.7ct Tourmaline Emerald (9×6mm, Dark Green)
and
3ct Topaz Emerald (10×8mm, 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, Topaz will face-up smaller than Tourmaline for a given
carat weight, because it has higher specific gravity
(3.53 vs. 3.06 - this means it's "heavier" compared to Tourmaline 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.
| 1.7 Ct Tourmaline (Emerald) | 3 Ct Topaz (Emerald) | |
| 9×6 mm | vs | 10×8 mm |
| 50.22 mm² | 74.4 mm² |
| 1.7ct Tourmaline Emerald (9×6mm) | |
| 3ct Topaz Emerald (10×8mm) | |
| Difference: 48% (24.18 mm²) |
3ct Topaz (Emerald, 10×8mm) has approx. 48% more face-up area than 1.7ct Tourmaline (Emerald, 9×6mm).
Popular comparisons:
- 1ct Tourmaline (Emerald, Light Green , 6.95 x 5.15) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 3.45ct Tourmaline (Emerald, Green, 10.5 x 7.78) vs. 0.1ct Sapphire (Round, Purple, 2.5 x 2.5)
- 10ct Tourmaline (Emerald, Violet, 14 x 10) vs. 10ct Tourmaline (Emerald, Dark Bluish Green, 14 x 10)
- 1ct Tourmaline (Emerald, Light Red, 6.95 x 5.15) vs. 1ct Sapphire (Round, Blue, 5.98 x 5.98)
- 3.45ct Tourmaline (Emerald, Green, 10.5 x 7.78) vs. 1ct Sapphire (Cushion, Blue, 5.59 x 5.59)
- 2.8ct Tourmaline (Emerald, Orangey Red, 9.8 x 7.26) vs. 1.5ct Sapphire (Oval, Light Blue, 8.66 x 5.77)
- 1ct Tourmaline (Emerald, Bluish Green, 4.8 x 6.3) vs. 1ct Tourmaline (Emerald, Dark Bluish Green, 5.1 x 6.8)
- 2ct Tourmaline (Emerald, Yellow, 8.76 x 6.49) vs. 2ct Tourmaline (Asscher, Yellow, 7.35 x 7.35)