40ct Pyrope (Asscher, 18.58×18.58mm, Red) vs 40ct Sunstone (Asscher, 20.91×20.91mm, Orangey Red)
Quick summary: When looked from above (face-up position), 40ct Sunstone (20.91×20.91mm, asscher cut) appears 27% larger than 40ct Pyrope (18.58×18.58mm, asscher cut). See below how they compare side-by-side on a ring and finger.
| 40ct Pyrope (asscher cut) |
vs
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40ct Sunstone (asscher cut) |
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red |
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| 18.58×18.58 mm | 20.91×20.91 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 Pyrope Asscher (18.58×18.58mm, Red)
and
40ct Sunstone Asscher (20.91×20.91mm, 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.
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 Pyrope (Asscher) | 40 Ct Sunstone (Asscher) | |
| 18.58×18.58 mm | vs | 20.91×20.91 mm |
| 317.6 mm² | 402.25 mm² |
| 40ct Pyrope Asscher (18.58×18.58mm) | |
| 40ct Sunstone Asscher (20.91×20.91mm) | |
| Difference: 27% (84.65 mm²) |
40ct Sunstone (Asscher, 20.91×20.91mm) has approx. 27% more face-up area than 40ct Pyrope (Asscher, 18.58×18.58mm).
Popular comparisons:
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- 1ct Topaz (Round, Blue, 6 x 6) vs. 0.5ct Topaz (Round, Blue, 5 x 5)