2ct Topaz (Round, 7.85×7.85mm, Light Bluish Green) vs 1.65ct Sapphire (Emerald, 7.55×5.59mm, Blue)
Quick summary: When looked from above (face-up position), 2ct Topaz (7.85×7.85mm, round cut) appears 23% larger than 1.65ct Sapphire (7.55×5.59mm, emerald cut). See below how they compare side-by-side on a ring and finger.
| 2ct Topaz (round cut) |
vs
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1.65ct Sapphire (emerald cut) |
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light bluish green |
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| 7.85×7.85 mm | 7.55×5.59 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, Light Bluish Green)
and
1.65ct Sapphire Emerald (7.55×5.59mm, 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.
| 2 Ct Topaz (Round) | 1.65 Ct Sapphire (Emerald) | |
| 7.85×7.85 mm | vs | 7.55×5.59 mm |
| 48.4 mm² | 39.25 mm² |
| 2ct Topaz Round (7.85×7.85mm) | |
| 1.65ct Sapphire Emerald (7.55×5.59mm) | |
| Difference: 23% (9.15 mm²) |
2ct Topaz (Round, 7.85×7.85mm) has approx. 23% more face-up area than 1.65ct Sapphire (Emerald, 7.55×5.59mm).
Popular comparisons:
- 2ct Topaz (Round, Light Bluish Green, 7.85 x 7.85) vs. 1.65ct Sapphire (Emerald, Blue, 7.8 x 5.8)
- 2ct Topaz (Round, Light Bluish Green, 7.85 x 7.85) vs. 1.65ct Sapphire (Emerald, Blue, 7.8 x 5)
- 2ct Topaz (Round, Light Bluish Green, 7.85 x 7.85) vs. 1.2ct Ruby (Round, Red, 6 x 6)
- 2ct Topaz (Round, Light Bluish Green, 7.85 x 7.85) vs. 1ct Topaz (Round, Light Bluish Green, 6.23 x 6.23)
- 1ct Topaz (Round, Blue, 6.23 x 6.23) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1ct Topaz (Round, Blue, 6.23 x 6.23) vs. 1ct Tourmaline (Round, Violet, 6.51 x 6.51)
- 8ct Topaz (Round, Blue, 12.47 x 12.47) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 2ct Topaz (Round, Blue, 7.85 x 7.85) vs. 1ct Topaz (Round, Blue, 6.23 x 6.23)