40ct Sunstone (Marquise, 38.14×19.07mm, Orangey Red) vs 40ct Diopside (Marquise, 35.46×17.73mm, Green)
Quick summary: When looked from above (face-up position), 40ct Sunstone (38.14×19.07mm, marquise cut) appears 16% larger than 40ct Diopside (35.46×17.73mm, marquise cut). See below how they compare side-by-side on a ring and finger.
| 40ct Sunstone (marquise cut) |
vs
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40ct Diopside (marquise cut) |
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orangey red |
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| 38.14×19.07 mm | 35.46×17.73 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
40ct Sunstone Marquise (38.14×19.07mm, Orangey Red)
and
40ct Diopside Marquise (35.46×17.73mm, 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.
| 40 Ct Sunstone (Marquise) | 40 Ct Diopside (Marquise) | |
| 38.14×19.07 mm | vs | 35.46×17.73 mm |
| 516.4 mm² | 446.38 mm² |
| 40ct Sunstone Marquise (38.14×19.07mm) | |
| 40ct Diopside Marquise (35.46×17.73mm) | |
| Difference: 16% (70.02 mm²) |
40ct Sunstone (Marquise, 38.14×19.07mm) has approx. 16% more face-up area than 40ct Diopside (Marquise, 35.46×17.73mm).
Popular comparisons:
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