1.3ct Tanzanite (Round, 6.96×6.96mm, Blue) vs 1.3ct Diamond (Round, 7.09×7.09mm, White)
Quick summary: When looked from above (face-up position), 1.3ct Diamond (7.09×7.09mm, round cut) appears 4% larger than 1.3ct Tanzanite (6.96×6.96mm, round cut). See below how they compare side-by-side on a ring and finger.
| 1.3ct Tanzanite (round cut) |
vs
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1.3ct Diamond (round cut) |
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blue |
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| 6.96×6.96 mm | 7.09×7.09 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
1.3ct Tanzanite Round (6.96×6.96mm, Blue)
and
1.3ct Diamond Round (7.09×7.09mm, 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.
| 1.3 Ct Tanzanite (Round) | 1.3 Ct Diamond (Round) | |
| 6.96×6.96 mm | vs | 7.09×7.09 mm |
| 38.05 mm² | 39.48 mm² |
| 1.3ct Tanzanite Round (6.96×6.96mm) | |
| 1.3ct Diamond Round (7.09×7.09mm) | |
| Difference: 4% (1.43 mm²) |
1.3ct Diamond (Round, 7.09×7.09mm) has approx. 4% more face-up area than 1.3ct Tanzanite (Round, 6.96×6.96mm).
Popular comparisons:
- 1.3ct Tanzanite (Round, Blue, 6.96 x 6.96) vs. 1.5ct Emerald (Emerald, Green, 8 x 6)
- 1.3ct Tanzanite (Round, Blue, 6.96 x 6.96) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1.3ct Tanzanite (Round, Blue, 6.96 x 6.96) vs. 1.5ct Tanzanite (Cushion, Blue, 6.82 x 6.82)
- 1.3ct Tanzanite (Round, Blue, 6.96 x 6.96) vs. 1.74ct Tanzanite (Oval, Blue, 9.71 x 6.47)
- 1.3ct Tanzanite (Round, Blue, 6.96 x 6.96) vs. 0.95ct Tanzanite (Round, Blue, 6.27 x 6.27)
- 1.3ct Tanzanite (Round, Blue, 6.96 x 6.96) vs. 0.72ct Tanzanite (Oval, Blue, 7.23 x 4.82)
- 1.3ct Tanzanite (Round, Blue, 6.96 x 6.96) vs. 1ct Tanzanite (Pear, Blue, 8.85 x 5.33)
- 1.3ct Tanzanite (Round, Blue, 6.96 x 6.96) vs. 1.6ct Tanzanite (Pear, Blue, 10.36 x 6.24)