2.5ct Diopside (Cabochon, 9.9×6.6mm, Green) vs 2.5ct Emerald (Cabochon, 10.56×7.04mm, Green)
Quick summary: When looked from above (face-up position), 2.5ct Emerald (10.56×7.04mm, cabochon cut) appears 14% larger than 2.5ct Diopside (9.9×6.6mm, cabochon cut). See below how they compare side-by-side on a ring and finger.
| 2.5ct Diopside (cabochon cut) |
vs
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2.5ct Emerald (cabochon cut) |
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green |
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| 9.9×6.6 mm | 10.56×7.04 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
2.5ct Diopside Cabochon (9.9×6.6mm, Green)
and
2.5ct Emerald Cabochon (10.56×7.04mm, Green)
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, Diopside will face-up smaller than Emerald for a given
carat weight, because it has higher specific gravity
(3.3 vs. 2.72 - this means it's "heavier" compared to Emerald 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.
| 2.5 Ct Diopside (Cabochon) | 2.5 Ct Emerald (Cabochon) | |
| 9.9×6.6 mm | vs | 10.56×7.04 mm |
| 53.58 mm² | 60.96 mm² |
| 2.5ct Diopside Cabochon (9.9×6.6mm) | |
| 2.5ct Emerald Cabochon (10.56×7.04mm) | |
| Difference: 14% (7.38 mm²) |
2.5ct Emerald (Cabochon, 10.56×7.04mm) has approx. 14% more face-up area than 2.5ct Diopside (Cabochon, 9.9×6.6mm).
Popular comparisons:
- 0.1ct Diopside (Cabochon, Yellowish Green, 3.39 x 2.26) vs. 40ct Beryl (Radiant, Green, 21.59 x 21.59)
- 2.73ct Diopside (Cabochon, Green, 10.2 x 6.8) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 2.73ct Diopside (Cabochon, Green, 9.04 x 8.31) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 0.1ct Diopside (Cabochon, Yellowish Green, 3.39 x 2.26) vs. 40ct Beryl (Marquise, Green, 38.48 x 19.24)
- 2.7ct Ruby (Pear, Red, 10 x 7) vs. 3ct Ruby (Emerald, Red, 9 x 7)
- 1.5ct Tourmaline (Round, Light Red, 7.45 x 7.45) vs. 1.5ct Sapphire (Round, Light Blue, 6.84 x 6.84)
- 1ct Kyanite (Oval, Blue, 7.77 x 5.18) vs. 1ct Tanzanite (Oval, Blue, 8.07 x 5.38)
- 1ct Aquamarine (Oval, Light Blue, 8 x 6) vs. 1ct Spinel (Oval, Gray, 8 x 6)
- 1.16ct Diamond (Round, White, 6.82 x 6.85) vs. 1.2ct Diamond (Round, White, 6.82 x 6.86)