1ct Spinel (Princess, 5.57×5.57mm, Red) vs 1ct Diamond (Princess, 5.51×5.51mm, White)
Quick summary: When looked from above (face-up position), 1ct Spinel (5.57×5.57mm, princess cut) appears 2% larger than 1ct Diamond (5.51×5.51mm, princess cut). See below how they compare side-by-side on a ring and finger.
| 1ct Spinel (princess cut) |
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1ct Diamond (princess cut) |
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red |
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| 5.57×5.57 mm | 5.51×5.51 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 Princess (5.57×5.57mm, Red)
and
1ct Diamond Princess (5.51×5.51mm, White)
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 slightly smaller than Diamond for a given
carat weight, because it has higher specific gravity
(3.6 vs. 3.52 - this means it's "slightly heavier" compared to Diamond 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 (Princess) | 1 Ct Diamond (Princess) | |
| 5.57×5.57 mm | vs | 5.51×5.51 mm |
| 31.02 mm² | 30.36 mm² |
| 1ct Spinel Princess (5.57×5.57mm) | |
| 1ct Diamond Princess (5.51×5.51mm) | |
| Difference: 2% (0.66 mm²) |
1ct Spinel (Princess, 5.57×5.57mm) has approx. 2% more face-up area than 1ct Diamond (Princess, 5.51×5.51mm).
Popular comparisons:
- 1ct Spinel (Princess, Red, 5.57 x 5.57) vs. 1ct Sapphire (Princess, Blue, 5.37 x 5.37)
- 1ct Spinel (Princess, Red, 5.57 x 5.57) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Spinel (Princess, Red, 5.57 x 5.57) vs. 1ct Emerald (Cushion, Green, 6.37 x 6.37)
- 1ct Spinel (Princess, Red, 5.57 x 5.57) vs. 0.5ct Diamond (Round, White, 5.16 x 5.16)
- 2ct Spinel (Princess, Gray, 7.01 x 7.01) vs. 2ct Diamond (Cushion, White, 7.34 x 7.34)
- 2ct Spinel (Princess, Gray, 7.01 x 7.01) vs. 2ct Spinel (Cushion, Gray, 7.3 x 7.3)
- 40ct Spinel (Princess, Red, 19.04 x 19.04) vs. 40ct Spinel (Emerald, Red, 22.61 x 16.75)
- 0.5ct Spinel (Princess, Red, 4.42 x 4.42) vs. 0.5ct Diamond (Round, White, 5.16 x 5.16)