2ct Topaz (Round, 7.85×7.85mm, Blue) vs 2ct Diamond (Round, 8.19×8.19mm, White)
Quick summary: When looked from above (face-up position), 2ct Diamond (8.19×8.19mm, round cut) appears 9% larger than 2ct Topaz (7.85×7.85mm, round cut). See below how they compare side-by-side on a ring and finger.
| 2ct Topaz (round cut) |
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2ct Diamond (round cut) |
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blue |
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| 7.85×7.85 mm | 8.19×8.19 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, Blue)
and
2ct Diamond Round (8.19×8.19mm, White)
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, Topaz will face-up slightly smaller than Diamond for a given
carat weight, because it has higher specific gravity
(3.53 vs. 3.52 - this means it's "slightly heavier" compared to Diamond 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) | 2 Ct Diamond (Round) | |
| 7.85×7.85 mm | vs | 8.19×8.19 mm |
| 48.4 mm² | 52.68 mm² |
| 2ct Topaz Round (7.85×7.85mm) | |
| 2ct Diamond Round (8.19×8.19mm) | |
| Difference: 9% (4.28 mm²) |
2ct Diamond (Round, 8.19×8.19mm) has approx. 9% more face-up area than 2ct Topaz (Round, 7.85×7.85mm).
Popular comparisons:
- 2ct Topaz (Round, Blue, 7.85 x 7.85) vs. 1ct Topaz (Round, Blue, 6.23 x 6.23)
- 2ct Topaz (Round, Blue, 7.85 x 7.85) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 2ct Topaz (Round, Blue, 7.85 x 7.85) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 2ct Topaz (Round, Blue, 7.85 x 7.85) vs. 2ct Sapphire (Round, Blue, 7.53 x 7.53)
- 2ct Topaz (Round, Blue, 7.85 x 7.85) vs. 2ct Topaz (Emerald, Bluish Green, 8.38 x 6.21)
- 2ct Topaz (Round, Blue, 7.85 x 7.85) vs. 1ct Tanzanite (Round, Blue, 6.37 x 6.37)
- 2ct Topaz (Round, Blue, 7.85 x 7.85) vs. 0.5ct Tourmaline (Oval, Violet, 6.54 x 4.36)
- 2ct Topaz (Round, Blue, 7.85 x 7.85) vs. 2ct Spinel (Round, Red, 7.8 x 7.8)