1ct Sapphire (Cabochon, 6.84×4.56mm, Dark Bluish Green) vs 1ct Spinel (Oval, 8×6mm, Gray)
Quick summary: When looked from above (face-up position), 1ct Spinel (8×6mm, oval cut) appears 54% larger than 1ct Sapphire (6.84×4.56mm, cabochon cut). See below how they compare side-by-side on a ring and finger.
| 1ct Sapphire (cabochon cut) |
vs
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1ct Spinel (oval cut) |
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dark bluish green |
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| 6.84×4.56 mm | 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
1ct Sapphire Cabochon (6.84×4.56mm, Dark Bluish Green)
and
1ct Spinel Oval (8×6mm, Gray)
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 Spinel for a given
carat weight, because it has higher specific gravity
(4 vs. 3.6 - this means it's "heavier" compared to Spinel 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 Sapphire (Cabochon) | 1 Ct Spinel (Oval) | |
| 6.84×4.56 mm | vs | 8×6 mm |
| 25.58 mm² | 39.36 mm² |
| 1ct Sapphire Cabochon (6.84×4.56mm) | |
| 1ct Spinel Oval (8×6mm) | |
| Difference: 54% (13.78 mm²) |
1ct Spinel (Oval, 8×6mm) has approx. 54% more face-up area than 1ct Sapphire (Cabochon, 6.84×4.56mm).
Popular comparisons:
- 1ct Sapphire (Cabochon, Dark Bluish Green, 6.84 x 4.56) vs. 1ct Sapphire (Baguette, Dark Bluish Green, 6.93 x 4.62)
- 1ct Sapphire (Cabochon, Dark Bluish Green, 6.84 x 4.56) vs. 1ct Diamond (Cabochon, White, 7.14 x 4.76)
- 2ct Sapphire (Cabochon, Dark Blue, 8 x 6) vs. 2.27ct Sapphire (Cabochon, Light Blue, 8 x 6.1)
- 2ct Sapphire (Cabochon, Blue, 8.63 x 5.75) vs. 2ct Diamond (Cabochon, White, 9 x 6)
- 2ct Sapphire (Cabochon, Blue, 8.63 x 5.75) vs. 2ct Ruby (Oval, Red, 9.53 x 6.35)
- 5ct Sapphire (Cabochon, Dark Blue, 10 x 10) vs. 8ct Ruby (Cabochon, Red, 13.68 x 9.12)
- 3.9ct Sapphire (Cabochon, Blue, 9.5 x 7.8) vs. 2.94ct Sapphire (Cabochon, Purple, 8.25 x 6.98)
- 1.92ct Sapphire (Cabochon, Blue, 8.51 x 5.67) vs. 0.74ct Sapphire (Cabochon, Blue, 6.2 x 4.13)