0.15ct Sapphire (Pear, 4.42×2.66mm, Blue) vs 2ct Topaz (Round, 7.85×7.85mm, Blue)
Quick summary: When looked from above (face-up position), 2ct Topaz (7.85×7.85mm, round cut) appears 5.6 times larger than 0.15ct Sapphire (4.42×2.66mm, pear cut). See below how they compare side-by-side on a ring and finger.
| 0.15ct Sapphire (pear cut) |
vs
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2ct Topaz (round cut) |
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blue |
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| 4.42×2.66 mm | 7.85×7.85 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
0.15ct Sapphire Pear (4.42×2.66mm, Blue)
and
2ct Topaz Round (7.85×7.85mm, 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.
| 0.15 Ct Sapphire (Pear) | 2 Ct Topaz (Round) | |
| 4.42×2.66 mm | vs | 7.85×7.85 mm |
| 8.58 mm² | 48.4 mm² |
| 0.15ct Sapphire Pear (4.42×2.66mm) | |
| 2ct Topaz Round (7.85×7.85mm) | |
| Difference: 464% (39.82 mm²) |
2ct Topaz (Round, 7.85×7.85mm) has approx. 464% more face-up area than 0.15ct Sapphire (Pear, 4.42×2.66mm). In other words, it's 5.64x larger.
Popular comparisons:
- 0.15ct Sapphire (Pear, Blue, 4.42 x 2.66) vs. 0.4ct Diamond (Round, White, 4.79 x 4.79)
- 0.15ct Sapphire (Pear, Blue, 4.42 x 2.66) vs. 0.12ct Diamond (Round, White, 3.21 x 3.21)
- 0.15ct Sapphire (Pear, Blue, 4.42 x 2.66) vs. 0.1ct Diamond (Emerald, White, 3.11 x 2.3)
- 0.15ct Sapphire (Pear, Blue, 4.42 x 2.66) vs. 3.05ct Diamond (Emerald, White, 9.69 x 7.18)
- 0.15ct Sapphire (Pear, Blue, 4.42 x 2.66) vs. 0.15ct Emerald (Princess, Green, 3.26 x 3.26)
- 0.15ct Sapphire (Pear, Blue, 4.42 x 2.66) vs. 0.1ct Sapphire (Pear, Blue, 3.85 x 2.32)
- 0.15ct Sapphire (Pear, Blue, 4.42 x 2.66) vs. 2ct Topaz (Oval, Blue, 9.93 x 6.62)
- 0.15ct Sapphire (Pear, Blue, 4.42 x 2.66) vs. 6.45ct Topaz (Oval, Blue, 14.69 x 9.79)