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28ct Sunstone (Round, 20.82×20.82mm, Orangey Red) vs 28ct Diopside (Round, 19.36×19.36mm, Green)


Quick summary: When looked from above (face-up position), 28ct Sunstone (20.82×20.82mm, round cut) appears 16% larger than 28ct Diopside (19.36×19.36mm, round cut). See below how they compare side-by-side on a ring and finger.

28ct Sunstone (round cut)
vs
 28ct Diopside (round cut)
orangey red
 
green
20.82×20.82 mm 19.36×19.36 mm
actual size
Actual size of 28ct Sunstone (round cut, 20.82×20.82mm, Orangey Red color)   Actual size of 28ct Diopside (round cut, 19.36×19.36mm, Green color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Orangey Red 28ct Sunstone (round cut, 20.82×20.82mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 28ct Diopside (round cut, 19.36×19.36mm) on a right ring and finger
Your settings
Ring
 Gold
Skin tone
 Light
Ring diameter
 16.9 mm
Ring width
 3.0 mm
Finger length
 64 mm
Finger coverage
 124% vs 115%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 28ct Sunstone Round (20.82×20.82mm, Orangey Red) and 28ct Diopside Round (19.36×19.36mm, 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.


28 Ct Sunstone (Round) 28 Ct Diopside (Round)
20.82×20.82 mm vs 19.36×19.36 mm
340.45 mm²   294.37 mm²
Face-up size outline for 28ct Sunstone (20.82×20.82mm, round cut)
Face-up size outline for 28ct Diopside (19.36×19.36mm, round cut)
28ct Sunstone Round (20.82×20.82mm)
28ct Diopside Round (19.36×19.36mm)
Difference: 16% (46.08 mm²)
28ct Sunstone (Round, 20.82×20.82mm) has approx. 16% more face-up area than 28ct Diopside (Round, 19.36×19.36mm).


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