1.75ct Sapphire (Round, 7.2×7.2mm, Blue) vs 1.75ct Tanzanite (Round, 7.64×7.64mm, Blue)
Quick summary: When looked from above (face-up position), 1.75ct Tanzanite (7.64×7.64mm, round cut) appears 13% larger than 1.75ct Sapphire (7.2×7.2mm, round cut). See below how they compare side-by-side on a ring and finger.
| 1.75ct Sapphire (round cut) |
vs
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1.75ct Tanzanite (round cut) |
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blue |
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| 7.2×7.2 mm | 7.64×7.64 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
1.75ct Sapphire Round (7.2×7.2mm, Blue)
and
1.75ct Tanzanite Round (7.64×7.64mm, Blue)
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, Sapphire will face-up smaller than Tanzanite for a given
carat weight, because it has higher specific gravity
(4 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.
| 1.75 Ct Sapphire (Round) | 1.75 Ct Tanzanite (Round) | |
| 7.2×7.2 mm | vs | 7.64×7.64 mm |
| 40.72 mm² | 45.84 mm² |
| 1.75ct Sapphire Round (7.2×7.2mm) | |
| 1.75ct Tanzanite Round (7.64×7.64mm) | |
| Difference: 13% (5.12 mm²) |
1.75ct Tanzanite (Round, 7.64×7.64mm) has approx. 13% more face-up area than 1.75ct Sapphire (Round, 7.2×7.2mm).
Popular comparisons:
- 1.75ct Sapphire (Round, Blue, 7.2 x 7.2) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 1.75ct Sapphire (Round, Blue, 7.2 x 7.2) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1.75ct Sapphire (Round, Blue, 7.2 x 7.2) vs. 1.5ct Diamond (Round, White, 7.44 x 7.44)
- 1.75ct Sapphire (Round, Blue, 7.2 x 7.2) vs. 1.5ct Sapphire (Oval, Blue, 8.66 x 5.77)
- 1.75ct Sapphire (Round, Blue, 7.2 x 7.2) vs. 1.5ct Sapphire (Oval, Blue, 8.66 x 7)
- 1.75ct Sapphire (Round, Blue, 7.2 x 7.2) vs. 1.75ct Spinel (Round, Red, 7.46 x 7.46)
- 1.75ct Sapphire (Round, Blue, 7.2 x 7.2) vs. 2.16ct Sapphire (Round, Blue, 7.73 x 7.73)
- 1.75ct Sapphire (Round, Blue, 7.2 x 7.2) vs. 1ct Emerald (Round, Green, 7.7 x 7.7)
- 1.75ct Sapphire (Round, Blue, 7.2 x 7.2) vs. 1.68ct Sapphire (Oval, Blue, 8.99 x 5.99)