1ct Spinel (Oval, 7.83×5.22mm, Red) vs 1ct Tanzanite (Oval, 8.07×5.38mm, Blue)
Quick summary: When looked from above (face-up position), 1ct Tanzanite (8.07×5.38mm, oval cut) appears 6% larger than 1ct Spinel (7.83×5.22mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 1ct Spinel (oval cut) |
vs
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1ct Tanzanite (oval cut) |
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red |
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| 7.83×5.22 mm | 8.07×5.38 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
1ct Spinel Oval (7.83×5.22mm, Red)
and
1ct Tanzanite Oval (8.07×5.38mm, 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, Spinel will face-up smaller than Tanzanite for a given
carat weight, because it has higher specific gravity
(3.6 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 Ct Spinel (Oval) | 1 Ct Tanzanite (Oval) | |
| 7.83×5.22 mm | vs | 8.07×5.38 mm |
| 33.52 mm² | 35.6 mm² |
| 1ct Spinel Oval (7.83×5.22mm) | |
| 1ct Tanzanite Oval (8.07×5.38mm) | |
| Difference: 6% (2.08 mm²) |
1ct Tanzanite (Oval, 8.07×5.38mm) has approx. 6% more face-up area than 1ct Spinel (Oval, 7.83×5.22mm).
Popular comparisons:
- 1ct Spinel (Oval, Red, 7.83 x 5.22) vs. 1ct Ruby (Oval, Red, 7.56 x 5.04)
- 1ct Spinel (Oval, Red, 7.83 x 5.22) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Spinel (Oval, Red, 7.83 x 5.22) vs. 1ct Tourmaline (Emerald, Light Green , 6.95 x 5.15)
- 1ct Spinel (Oval, Red, 7.83 x 5.22) vs. 1ct Sapphire (Oval, Blue, 7.56 x 5.04)
- 1ct Spinel (Oval, Red, 7.83 x 5.22) vs. 1ct Diamond (Oval, White, 8.12 x 5.41)
- 1ct Spinel (Oval, Red, 7.83 x 5.22) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1ct Spinel (Oval, Red, 7.83 x 5.22) vs. 1ct Spinel (Emerald, Red, 6.62 x 4.9)
- 1ct Spinel (Oval, Red, 7.83 x 5.22) vs. 7ct Spinel (Oval, Red, 14.99 x 9.99)