1.5ct Topaz (Round, 7.13×7.13mm, Blue) vs 1.5ct Diamond (Round, 7.44×7.44mm, White)
Quick summary: When looked from above (face-up position), 1.5ct Diamond (7.44×7.44mm, round cut) appears 9% larger than 1.5ct Topaz (7.13×7.13mm, round cut). See below how they compare side-by-side on a ring and finger.
| 1.5ct Topaz (round cut) |
vs
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1.5ct Diamond (round cut) |
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blue |
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| 7.13×7.13 mm | 7.44×7.44 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
1.5ct Topaz Round (7.13×7.13mm, Blue)
and
1.5ct Diamond Round (7.44×7.44mm, 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.
| 1.5 Ct Topaz (Round) | 1.5 Ct Diamond (Round) | |
| 7.13×7.13 mm | vs | 7.44×7.44 mm |
| 39.93 mm² | 43.47 mm² |
| 1.5ct Topaz Round (7.13×7.13mm) | |
| 1.5ct Diamond Round (7.44×7.44mm) | |
| Difference: 9% (3.54 mm²) |
1.5ct Diamond (Round, 7.44×7.44mm) has approx. 9% more face-up area than 1.5ct Topaz (Round, 7.13×7.13mm).
Popular comparisons:
- 1.5ct Topaz (Round, Blue, 7.13 x 7.13) vs. 2ct Topaz (Emerald, Blue, 8.38 x 6.21)
- 1.5ct Topaz (Round, Blue, 7.13 x 7.13) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1.5ct Topaz (Round, Blue, 7.13 x 7.13) vs. 1.5ct Topaz (Emerald, Blue, 7.61 x 5.64)
- 1.5ct Topaz (Round, Blue, 7.13 x 7.13) vs. 0.25ct Alexandrite (Trillion, Violet, 4.54 x 4.54)
- 1.5ct Topaz (Round, Blue, 7.13 x 7.13) vs. 1ct Emerald (Round, Green, 6.82 x 6.82)
- 1.5ct Topaz (Round, Blue, 7.13 x 7.13) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 1.5ct Topaz (Round, Blue, 7.13 x 7.13) vs. 1.5ct Topaz (Emerald, Bluish Green, 7.61 x 5.64)
- 1.5ct Topaz (Round, Blue, 7.13 x 7.13) vs. 0.06ct Diamond (Baguette, White, 2.84 x 1.89)