3ct Sapphire (Oval, 10.91×7.27mm, Dark Bluish Green) vs 6.81ct Tourmaline (Oval, 15.62×10.41mm, Dark Red)
Quick summary: When looked from above (face-up position), 6.81ct Tourmaline (15.62×10.41mm, oval cut) appears 2.1 times larger than 3ct Sapphire (10.91×7.27mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 3ct Sapphire (oval cut) |
vs
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6.81ct Tourmaline (oval cut) |
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dark bluish green |
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| 10.91×7.27 mm | 15.62×10.41 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
3ct Sapphire Oval (10.91×7.27mm, Dark Bluish Green)
and
6.81ct Tourmaline Oval (15.62×10.41mm, Dark Red)
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, Sapphire will face-up smaller than Tourmaline for a given
carat weight, because it has higher specific gravity
(4 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.
| 3 Ct Sapphire (Oval) | 6.81 Ct Tourmaline (Oval) | |
| 10.91×7.27 mm | vs | 15.62×10.41 mm |
| 65.04 mm² | 133.34 mm² |
| 3ct Sapphire Oval (10.91×7.27mm) | |
| 6.81ct Tourmaline Oval (15.62×10.41mm) | |
| Difference: 105% (68.3 mm²) |
6.81ct Tourmaline (Oval, 15.62×10.41mm) has approx. 105% more face-up area than 3ct Sapphire (Oval, 10.91×7.27mm). In other words, it's 2.05x larger.
Popular comparisons:
- 3ct Sapphire (Oval, Dark Bluish Green, 10.91 x 7.27) vs. 6.81ct Tourmaline (Oval, Red, 15.62 x 10.41)
- 3ct Sapphire (Oval, Dark Bluish Green, 10.91 x 7.27) vs. 4.44ct Emerald (Princess, Bluish Green, 10.07 x 10.07)
- 3ct Sapphire (Oval, Dark Bluish Green, 10.91 x 7.27) vs. 3.62ct Sapphire (Oval, Dark Bluish Green, 9.82 x 8.16)
- 3ct Sapphire (Oval, Dark Bluish Green, 10.91 x 7.27) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 3ct Sapphire (Oval, Dark Bluish Green, 10.91 x 7.27) vs. 3ct Diamond (Oval, White, 11.7 x 7.8)
- 3ct Sapphire (Oval, Dark Bluish Green, 10.91 x 7.27) vs. 6.78ct Ruby (Oval, Red, 14.31 x 9.54)
- 3ct Sapphire (Oval, Dark Bluish Green, 10.91 x 7.27) vs. 6.78ct Tourmaline (Oval, Red, 15.59 x 10.39)
- 3ct Sapphire (Oval, Dark Bluish Green, 10.91 x 7.27) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)