0.5ct Topaz (Round, 4.95×4.95mm, Blue) vs 0.5ct Diamond (Round, 5.16×5.16mm, White)
Quick summary: When looked from above (face-up position), 0.5ct Diamond (5.16×5.16mm, round cut) appears 9% larger than 0.5ct Topaz (4.95×4.95mm, round cut). See below how they compare side-by-side on a ring and finger.
| 0.5ct Topaz (round cut) |
vs
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0.5ct Diamond (round cut) |
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blue |
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| 4.95×4.95 mm | 5.16×5.16 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
0.5ct Topaz Round (4.95×4.95mm, Blue)
and
0.5ct Diamond Round (5.16×5.16mm, 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.
| 0.5 Ct Topaz (Round) | 0.5 Ct Diamond (Round) | |
| 4.95×4.95 mm | vs | 5.16×5.16 mm |
| 19.24 mm² | 20.91 mm² |
| 0.5ct Topaz Round (4.95×4.95mm) | |
| 0.5ct Diamond Round (5.16×5.16mm) | |
| Difference: 9% (1.67 mm²) |
0.5ct Diamond (Round, 5.16×5.16mm) has approx. 9% more face-up area than 0.5ct Topaz (Round, 4.95×4.95mm).
Popular comparisons:
- 0.5ct Topaz (Round, Blue, 4.95 x 4.95) vs. 0.7ct Topaz (Round, Blue, 5.53 x 5.53)
- 0.5ct Topaz (Round, Blue, 4.95 x 4.95) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 0.5ct Topaz (Round, Blue, 4.95 x 4.95) vs. 0.25ct Topaz (Round, Blue, 3.93 x 3.93)
- 0.5ct Topaz (Round, Blue, 4.95 x 4.95) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 0.5ct Topaz (Round, Blue, 4.95 x 4.95) vs. 0.06ct Diamond (Baguette, White, 2.84 x 1.89)
- 0.5ct Topaz (Round, Blue, 4.95 x 4.95) vs. 0.8ct Emerald (Emerald, Green, 6.76 x 5.01)
- 0.5ct Topaz (Round, Blue, 4.95 x 4.95) vs. 0.06ct Diamond (Round, White, 2.54 x 2.54)
- 0.5ct Topaz (Round, Blue, 4.95 x 4.95) vs. 0.5ct Topaz (Oval, Blue, 6.26 x 4.17)