3ct Ruby (Cushion, 8.06×8.06mm, Red) vs 3ct Tanzanite (Cushion, 8.6×8.6mm, Blue)
Quick summary: When looked from above (face-up position), 3ct Tanzanite (8.6×8.6mm, cushion cut) appears 14% larger than 3ct Ruby (8.06×8.06mm, cushion cut). See below how they compare side-by-side on a ring and finger.
| 3ct Ruby (cushion cut) |
vs
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3ct Tanzanite (cushion cut) |
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red |
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| 8.06×8.06 mm | 8.6×8.6 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
3ct Ruby Cushion (8.06×8.06mm, Red)
and
3ct Tanzanite Cushion (8.6×8.6mm, 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.
| 3 Ct Ruby (Cushion) | 3 Ct Tanzanite (Cushion) | |
| 8.06×8.06 mm | vs | 8.6×8.6 mm |
| 58.47 mm² | 66.56 mm² |
| 3ct Ruby Cushion (8.06×8.06mm) | |
| 3ct Tanzanite Cushion (8.6×8.6mm) | |
| Difference: 14% (8.09 mm²) |
3ct Tanzanite (Cushion, 8.6×8.6mm) has approx. 14% more face-up area than 3ct Ruby (Cushion, 8.06×8.06mm).
Popular comparisons:
- 3ct Ruby (Cushion, Red, 8.06 x 8.06) vs. 5ct Ruby (Round, Red, 10.22 x 10.22)
- 3ct Ruby (Cushion, Red, 8.06 x 8.06) vs. 5ct Ruby (Cushion, Red, 9.56 x 9.56)
- 3ct Ruby (Cushion, Red, 8.06 x 8.06) vs. 3ct Diamond (Round, White, 9.37 x 9.37)
- 3ct Ruby (Cushion, Red, 8.06 x 8.06) vs. 2ct Ruby (Round, Red, 7.53 x 7.53)
- 3ct Ruby (Cushion, Red, 8.06 x 8.06) vs. 3ct Diamond (Cushion, White, 8.4 x 8.4)
- 3ct Ruby (Cushion, Red, 8.06 x 8.06) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 3ct Ruby (Cushion, Red, 8.06 x 8.06) vs. 1ct Emerald (Cushion, Green, 6.37 x 6.37)
- 3ct Ruby (Cushion, Red, 8.06 x 8.06) vs. 4ct Ruby (Cushion, Red, 8.88 x 8.88)