8ct Sapphire (Pear, 17.02×10.25mm, Blue) vs 8ct Topaz (Pear, 17.73×10.68mm, Blue)
Quick summary: When looked from above (face-up position), 8ct Topaz (17.73×10.68mm, pear cut) appears 9% larger than 8ct Sapphire (17.02×10.25mm, pear cut). See below how they compare side-by-side on a ring and finger.
| 8ct Sapphire (pear cut) |
vs
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8ct Topaz (pear cut) |
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blue |
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| 17.02×10.25 mm | 17.73×10.68 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
8ct Sapphire Pear (17.02×10.25mm, Blue)
and
8ct Topaz Pear (17.73×10.68mm, 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 Topaz for a given
carat weight, because it has higher specific gravity
(4 vs. 3.53 - this means it's "heavier" compared to Topaz 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.
| 8 Ct Sapphire (Pear) | 8 Ct Topaz (Pear) | |
| 17.02×10.25 mm | vs | 17.73×10.68 mm |
| 127.35 mm² | 138.23 mm² |
| 8ct Sapphire Pear (17.02×10.25mm) | |
| 8ct Topaz Pear (17.73×10.68mm) | |
| Difference: 9% (10.88 mm²) |
8ct Topaz (Pear, 17.73×10.68mm) has approx. 9% more face-up area than 8ct Sapphire (Pear, 17.02×10.25mm).
Popular comparisons:
- 1.93ct Sapphire (Pear, Blue, 9 x 6) vs. 3ct Sapphire (Pear, Blue, 10 x 7)
- 2ct Sapphire (Pear, Blue, 10.46 x 6.3) vs. 1.6ct Diamond (Round, White, 7.6 x 7.6)
- 2ct Sapphire (Pear, Blue, 10.46 x 6.3) vs. 2ct Diamond (Pear, White, 11.4 x 6.87)
- 2.51ct Sapphire (Pear, Dark Blue, 9.72 x 9.43) vs. 2.23ct Sapphire (Oval, Dark Blue, 9.42 x 6.21)
- 1.76ct Sapphire (Pear, Dark Bluish Green, 8.49 x 5.79) vs. 0.14ct Diamond (Pear, White, 4.7 x 2.83)
- 2ct Sapphire (Pear, Blue, 10.46 x 6.3) vs. 0.06ct Diamond (Baguette, White, 2.84 x 1.89)
- 2.51ct Sapphire (Pear, Dark Blue, 9.72 x 9.43) vs. 3.66ct Sapphire (Emerald, Dark Bluish Green, 9.77 x 6.94)
- 1ct Sapphire (Pear, Blue, 8.3 x 5) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 2ct Sapphire (Pear, Blue, 10.46 x 6.3) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)