18ct Hiddenite (Heart, 17.7×17.7mm, Light Green ) vs 18ct Diopside (Heart, 17.49×17.49mm, Green)
Quick summary: When looked from above (face-up position), 18ct Hiddenite (17.7×17.7mm, heart cut) appears 2% larger than 18ct Diopside (17.49×17.49mm, heart cut). See below how they compare side-by-side on a ring and finger.
| 18ct Hiddenite (heart cut) |
vs
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18ct Diopside (heart cut) |
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light green |
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| 17.7×17.7 mm | 17.49×17.49 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
18ct Hiddenite Heart (17.7×17.7mm, Light Green )
and
18ct Diopside Heart (17.49×17.49mm, 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 Hiddenite for a given
carat weight, because it has higher specific gravity
(3.3 vs. 3.18 - this means it's "heavier" compared to Hiddenite 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.
| 18 Ct Hiddenite (Heart) | 18 Ct Diopside (Heart) | |
| 17.7×17.7 mm | vs | 17.49×17.49 mm |
| 225.57 mm² | 220.25 mm² |
| 18ct Hiddenite Heart (17.7×17.7mm) | |
| 18ct Diopside Heart (17.49×17.49mm) | |
| Difference: 2% (5.32 mm²) |
18ct Hiddenite (Heart, 17.7×17.7mm) has approx. 2% more face-up area than 18ct Diopside (Heart, 17.49×17.49mm).
Popular comparisons:
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