8ct Tanzanite (Oval, 16.13×10.75mm, Blue) vs 10ct Diamond (Round, 14×14mm, White)
Quick summary: When looked from above (face-up position), 10ct Diamond (14×14mm, round cut) appears 8% larger than 8ct Tanzanite (16.13×10.75mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 8ct Tanzanite (oval cut) |
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10ct Diamond (round cut) |
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| 16.13×10.75 mm | 14×14 mm | |
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Actual sizes of
8ct Tanzanite Oval (16.13×10.75mm, Blue)
and
10ct Diamond Round (14×14mm, 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, Diamond will face-up smaller than Tanzanite for a given
carat weight, because it has higher specific gravity
(3.52 vs. 3.3 - this means it's "heavier" compared to Tanzanite 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.
| 8 Ct Tanzanite (Oval) | 10 Ct Diamond (Round) | |
| 16.13×10.75 mm | vs | 14×14 mm |
| 142.19 mm² | 153.94 mm² |
| 8ct Tanzanite Oval (16.13×10.75mm) | |
| 10ct Diamond Round (14×14mm) | |
| Difference: 8% (11.75 mm²) |
10ct Diamond Round (14×14mm) has approx. 8% more face-up area than 8ct Tanzanite Oval (16.13×10.75mm).
Popular comparisons:
- 8ct Tanzanite (Oval, Blue, 16.13 x 10.75) vs. 8ct Sapphire (Oval, Blue, 15.12 x 10.08)
- 8ct Tanzanite (Oval, Blue, 16.13 x 10.75) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 8ct Tanzanite (Oval, Blue, 16.13 x 10.75) vs. 15ct Sapphire (Oval, Blue, 18.66 x 12.44)
- 8ct Tanzanite (Oval, Blue, 16.13 x 10.75) vs. 7ct Sapphire (Oval, Blue, 14.48 x 9.65)
- 8ct Tanzanite (Oval, Blue, 16.13 x 10.75) vs. 8ct Diamond (Oval, White, 16.23 x 10.82)
- 1ct Tanzanite (Oval, Blue, 8.07 x 5.38) vs. 1ct Morganite (Oval, Light Purple, 8.63 x 5.75)
- 2ct Tanzanite (Oval, Blue, 10.16 x 6.77) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 2.5ct Tanzanite (Oval, Blue, 10.95 x 7.3) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
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Actual size is currently adjusted to screen.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.