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30ct Pyrope (Round, 18.93×18.93mm, Red) vs 30ct Sunstone (Round, 21.31×21.31mm, Orangey Red)


Quick summary: When looked from above (face-up position), 30ct Sunstone (21.31×21.31mm, round cut) appears 27% larger than 30ct Pyrope (18.93×18.93mm, round cut). See below how they compare side-by-side on a ring and finger.

30ct Pyrope (round cut)
vs
 30ct Sunstone (round cut)
red
 
orangey red
18.93×18.93 mm 21.31×21.31 mm
actual size
Actual size of 30ct Pyrope (round cut, 18.93×18.93mm, Red color)   Actual size of 30ct Sunstone (round cut, 21.31×21.31mm, Orangey Red color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 30ct Pyrope (round cut, 18.93×18.93mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orangey Red 30ct Sunstone (round cut, 21.31×21.31mm) 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
 113% vs 127%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 30ct Pyrope Round (18.93×18.93mm, Red) and 30ct Sunstone Round (21.31×21.31mm, Orangey Red) 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, Pyrope will face-up smaller than Sunstone for a given carat weight, because it has higher specific gravity (3.78 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.


30 Ct Pyrope (Round) 30 Ct Sunstone (Round)
18.93×18.93 mm vs 21.31×21.31 mm
281.44 mm²   356.66 mm²
Face-up size outline for 30ct Sunstone (21.31×21.31mm, round cut)
Face-up size outline for 30ct Pyrope (18.93×18.93mm, round cut)
30ct Pyrope Round (18.93×18.93mm)
30ct Sunstone Round (21.31×21.31mm)
Difference: 27% (75.22 mm²)
30ct Sunstone (Round, 21.31×21.31mm) has approx. 27% more face-up area than 30ct Pyrope (Round, 18.93×18.93mm).


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