0.75ct Ruby (Round, 5.43×5.43mm, Red) vs 0.7ct Tanzanite (Round, 5.66×5.66mm, Blue)
Quick summary: When looked from above (face-up position), 0.7ct Tanzanite (5.66×5.66mm, round cut) appears 9% larger than 0.75ct Ruby (5.43×5.43mm, round cut). See below how they compare side-by-side on a ring and finger.
| 0.75ct Ruby (round cut) |
vs
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0.7ct Tanzanite (round cut) |
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red |
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| 5.43×5.43 mm | 5.66×5.66 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
0.75ct Ruby Round (5.43×5.43mm, Red)
and
0.7ct Tanzanite Round (5.66×5.66mm, 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, Ruby 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.
| 0.75 Ct Ruby (Round) | 0.7 Ct Tanzanite (Round) | |
| 5.43×5.43 mm | vs | 5.66×5.66 mm |
| 23.16 mm² | 25.16 mm² |
| 0.75ct Ruby Round (5.43×5.43mm) | |
| 0.7ct Tanzanite Round (5.66×5.66mm) | |
| Difference: 9% (2 mm²) |
0.7ct Tanzanite (Round, 5.66×5.66mm) has approx. 9% more face-up area than 0.75ct Ruby (Round, 5.43×5.43mm).
Popular comparisons:
- 0.75ct Ruby (Round, Red, 5.43 x 5.43) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 0.75ct Ruby (Round, Red, 5.43 x 5.43) vs. 0.75ct Diamond (Round, White, 5.91 x 5.91)
- 0.75ct Ruby (Round, Red, 5.43 x 5.43) vs. 0.77ct Emerald (Round, Green, 6.25 x 6.25)
- 0.75ct Ruby (Round, Red, 5.43 x 5.43) vs. 1ct Diamond (Cushion, White, 5.83 x 5.83)
- 0.75ct Ruby (Round, Red, 5.43 x 5.43) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 0.75ct Ruby (Round, Red, 5.43 x 5.43) vs. 1.04ct Diamond (Round, Black, 6.59 x 6.59)
- 0.75ct Ruby (Round, Red, 5.43 x 5.43) vs. 3ct Topaz (Oval, Dark Blue, 11.37 x 7.58)
- 0.75ct Ruby (Round, Red, 5.43 x 5.43) vs. 0.75ct Emerald (Round, Green, 6.19 x 6.19)