2ct Tanzanite (Round, 8.03×8.03mm, 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 4% larger than 2ct Tanzanite (8.03×8.03mm, round cut). See below how they compare side-by-side on a ring and finger.
| 2ct Tanzanite (round cut) |
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2ct Diamond (round cut) |
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blue |
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| 8.03×8.03 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 Tanzanite Round (8.03×8.03mm, 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, Diamond will face-up smaller than Tanzanite for a given
carat weight, because it has higher specific gravity
(3.52 vs. 3.35 - 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.
| 2 Ct Tanzanite (Round) | 2 Ct Diamond (Round) | |
| 8.03×8.03 mm | vs | 8.19×8.19 mm |
| 50.64 mm² | 52.68 mm² |
| 2ct Tanzanite Round (8.03×8.03mm) | |
| 2ct Diamond Round (8.19×8.19mm) | |
| Difference: 4% (2.04 mm²) |
2ct Diamond (Round, 8.19×8.19mm) has approx. 4% more face-up area than 2ct Tanzanite (Round, 8.03×8.03mm).
Popular comparisons:
- 2ct Tanzanite (Round, Blue, 8.03 x 8.03) vs. 3ct Diamond (Round, White, 9.37 x 9.37)
- 2ct Tanzanite (Round, Blue, 8.03 x 8.03) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 2ct Tanzanite (Round, Blue, 8.03 x 8.03) vs. 1.5ct Diamond (Round, White, 7.44 x 7.44)
- 2ct Tanzanite (Round, Blue, 8.03 x 8.03) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 2ct Tanzanite (Round, Blue, 8.03 x 8.03) vs. 2ct Emerald (Emerald, Green, 9.17 x 6.79)
- 2ct Tanzanite (Round, Blue, 8.03 x 8.03) vs. 2.5ct Sapphire (Round, Dark Violet, 8.11 x 8.11)
- 2ct Tanzanite (Round, Blue, 8.03 x 8.03) vs. 3ct Tanzanite (Round, Blue, 9.19 x 9.19)
- 2ct Tanzanite (Round, Blue, 8.03 x 8.03) vs. 13ct Sapphire (Round, Dark Violet, 14.06 x 14.06)
Use the simulator on this page to play around with different ring and finger configurations.