18ct Sunstone (Pear, 25.56×15.4mm, Orangey Red) vs 18ct Diopside (Pear, 23.77×14.32mm, Green)
Quick summary: When looked from above (face-up position), 18ct Sunstone (25.56×15.4mm, pear cut) appears 16% larger than 18ct Diopside (23.77×14.32mm, pear cut). See below how they compare side-by-side on a ring and finger.
| 18ct Sunstone (pear cut) |
vs
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18ct Diopside (pear cut) |
|
orangey red |
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| 25.56×15.4 mm | 23.77×14.32 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 Sunstone Pear (25.56×15.4mm, Orangey Red)
and
18ct Diopside Pear (23.77×14.32mm, 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 Sunstone for a given
carat weight, because it has higher specific gravity
(3.3 vs. 2.65 - this means it's "heavier" compared to Sunstone 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 Sunstone (Pear) | 18 Ct Diopside (Pear) | |
| 25.56×15.4 mm | vs | 23.77×14.32 mm |
| 287.35 mm² | 248.48 mm² |
| 18ct Sunstone Pear (25.56×15.4mm) | |
| 18ct Diopside Pear (23.77×14.32mm) | |
| Difference: 16% (38.87 mm²) |
18ct Sunstone (Pear, 25.56×15.4mm) has approx. 16% more face-up area than 18ct Diopside (Pear, 23.77×14.32mm).
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