2ct Topaz (Round, 7.85×7.85mm, White) vs 2ct Tourmaline (Round, 8.2×8.2mm, Violet)
Quick summary: When looked from above (face-up position), 2ct Tourmaline (8.2×8.2mm, round cut) appears 9% larger than 2ct Topaz (7.85×7.85mm, round cut). See below how they compare side-by-side on a ring and finger.
| 2ct Topaz (round cut) |
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2ct Tourmaline (round cut) |
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white |
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| 7.85×7.85 mm | 8.2×8.2 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
2ct Topaz Round (7.85×7.85mm, White)
and
2ct Tourmaline Round (8.2×8.2mm, 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, 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.
| 2 Ct Topaz (Round) | 2 Ct Tourmaline (Round) | |
| 7.85×7.85 mm | vs | 8.2×8.2 mm |
| 48.4 mm² | 52.81 mm² |
| 2ct Topaz Round (7.85×7.85mm) | |
| 2ct Tourmaline Round (8.2×8.2mm) | |
| Difference: 9% (4.41 mm²) |
2ct Tourmaline (Round, 8.2×8.2mm) has approx. 9% more face-up area than 2ct Topaz (Round, 7.85×7.85mm).
Popular comparisons:
- 2ct Topaz (Round, White, 7.85 x 7.85) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 2ct Topaz (Round, White, 7.85 x 7.85) vs. 2ct Aquamarine (Round, Light Blue, 8.59 x 8.59)
- 2ct Topaz (Round, White, 7.85 x 7.85) vs. 2ct Sapphire (Round, White, 7.53 x 7.53)
- 2ct Topaz (Round, White, 7.85 x 7.85) vs. 2ct Sapphire (Emerald, White, 8.05 x 5.96)
- 2ct Topaz (Round, White, 7.85 x 7.85) vs. 3ct Sapphire (Emerald, White, 9.21 x 6.82)
- 2ct Topaz (Round, White, 7.85 x 7.85) vs. 1ct Tourmaline (Round, Violet, 6.51 x 6.51)
- 2ct Topaz (Round, White, 7.85 x 7.85) vs. 2ct Sinhalite (Round, Light Brown, 7.89 x 7.89)
- 2ct Topaz (Round, White, 7.85 x 7.85) vs. 2ct Zircon (Round, Light Gray, 7.16 x 7.16)