30ct Spinel (Emerald, 20.55×15.22mm, Red) vs 30ct Andesine (Emerald, 22.71×16.82mm, Orange)
Quick summary: When looked from above (face-up position), 30ct Andesine (22.71×16.82mm, emerald cut) appears 22% larger than 30ct Spinel (20.55×15.22mm, emerald cut). See below how they compare side-by-side on a ring and finger.
| 30ct Spinel (emerald cut) |
vs
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30ct Andesine (emerald cut) |
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red |
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| 20.55×15.22 mm | 22.71×16.82 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
30ct Spinel Emerald (20.55×15.22mm, Red)
and
30ct Andesine Emerald (22.71×16.82mm, Orange)
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 Andesine for a given
carat weight, because it has higher specific gravity
(3.6 vs. 2.67 - this means it's "heavier" compared to Andesine 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.
| 30 Ct Spinel (Emerald) | 30 Ct Andesine (Emerald) | |
| 20.55×15.22 mm | vs | 22.71×16.82 mm |
| 290.88 mm² | 355.24 mm² |
| 30ct Spinel Emerald (20.55×15.22mm) | |
| 30ct Andesine Emerald (22.71×16.82mm) | |
| Difference: 22% (64.36 mm²) |
30ct Andesine (Emerald, 22.71×16.82mm) has approx. 22% more face-up area than 30ct Spinel (Emerald, 20.55×15.22mm).
Popular comparisons:
- 9ct Spinel (Emerald, Red, 13.76 x 10.19) vs. 8ct Diamond (Emerald, White, 13.37 x 9.9)
- 2.35ct Spinel (Emerald, Light Blue, 8.9 x 6.7) vs. 2.35ct Spinel (Emerald, Light Blue, 8.79 x 6.51)
- 1.75ct Spinel (Emerald, Light Brown, 7.97 x 5.9) vs. 1.5ct Diamond (Emerald, White, 7.65 x 5.67)
- 12ct Spinel (Emerald, Dark Red, 15.15 x 11.22) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 2ct Spinel (Emerald, Gray, 9.5 x 6.6) vs. 1ct Chrysoberyl (Princess, Yellowish Green, 6 x 6)
- 2.8ct Spinel (Emerald, Red, 9.32 x 6.9) vs. 2.27ct Sapphire (Emerald, Blue, 8.4 x 6.22)
- 20ct Spinel (Emerald, Red, 17.96 x 13.3) vs. 8ct Diamond (Emerald, White, 13.37 x 9.9)
- 3.89ct Spinel (Emerald, Gray, 10.4 x 7.7) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 2ct Spinel (Emerald, Gray, 8.33 x 6.17) vs. 3ct Spinel (Emerald, Gray, 9.54 x 7.07)