5.8ct Tourmaline (Oval, 14.79×9.86mm, Violet) vs 8ct Sapphire (Oval, 15.12×10.08mm, Blue)
Quick summary: When looked from above (face-up position), 8ct Sapphire (15.12×10.08mm, oval cut) appears 5% larger than 5.8ct Tourmaline (14.79×9.86mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 5.8ct Tourmaline (oval cut) |
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8ct Sapphire (oval cut) |
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violet |
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| 14.79×9.86 mm | 15.12×10.08 mm | |
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Actual sizes of
5.8ct Tourmaline Oval (14.79×9.86mm, Violet)
and
8ct Sapphire Oval (15.12×10.08mm, 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, Sapphire will face-up smaller than Tourmaline for a given
carat weight, because it has higher specific gravity
(4 vs. 3.1 - 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.
| 5.8 Ct Tourmaline (Oval) | 8 Ct Sapphire (Oval) | |
| 14.79×9.86 mm | vs | 15.12×10.08 mm |
| 119.58 mm² | 124.98 mm² |
| 5.8ct Tourmaline Oval (14.79×9.86mm) | |
| 8ct Sapphire Oval (15.12×10.08mm) | |
| Difference: 5% (5.4 mm²) |
8ct Sapphire Oval (15.12×10.08mm) has approx. 5% more face-up area than 5.8ct Tourmaline Oval (14.79×9.86mm).
Popular comparisons:
- 14ct Tourmaline (Oval, Light Purple, 19.85 x 14) vs. 14ct Kunzite (Oval, Light Purple, 19.68 x 14)
- 3ct Tourmaline (Oval, White, 11.88 x 7.92) vs. 4.5ct Diamond (Oval, White, 13.4 x 8.93)
- 3.5ct Tourmaline (Oval, Light Green , 12.5 x 8.33) vs. 3.5ct Diamond (Oval, White, 12.32 x 8.21)
- 2.84ct Tourmaline (Oval, Violet, 11.66 x 7.77) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 8.8ct Tourmaline (Oval, Dark Yellowish Green, 15.22 x 11.45) vs. 6.54ct Sapphire (Pear, Dark Green, 12.83 x 9.31)
- 1ct Tourmaline (Oval, Red, 8.24 x 5.49) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 2.89ct Tourmaline (Oval, Red, 10.74 x 7.74) vs. 0.49ct Ruby (Oval, Red, 4.96 x 3.96)
- 3.5ct Tourmaline (Oval, Light Green , 12.5 x 8.33) vs. 3.5ct Diamond (Round, White, 9.87 x 9.87)
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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.