40ct Pyrope (Princess, 18.31×18.31mm, Red) vs 40ct Sunstone (Princess, 20.61×20.61mm, Orangey Red)
Quick summary: When looked from above (face-up position), 40ct Sunstone (20.61×20.61mm, princess cut) appears 27% larger than 40ct Pyrope (18.31×18.31mm, princess cut). See below how they compare side-by-side on a ring and finger.
| 40ct Pyrope (princess cut) |
vs
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40ct Sunstone (princess cut) |
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red |
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| 18.31×18.31 mm | 20.61×20.61 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 Princess (18.31×18.31mm, Red)
and
40ct Sunstone Princess (20.61×20.61mm, 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 (Princess) | 40 Ct Sunstone (Princess) | |
| 18.31×18.31 mm | vs | 20.61×20.61 mm |
| 335.26 mm² | 424.77 mm² |
| 40ct Pyrope Princess (18.31×18.31mm) | |
| 40ct Sunstone Princess (20.61×20.61mm) | |
| Difference: 27% (89.51 mm²) |
40ct Sunstone (Princess, 20.61×20.61mm) has approx. 27% more face-up area than 40ct Pyrope (Princess, 18.31×18.31mm).
Popular comparisons:
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- 1ct Topaz (Round, Blue, 6 x 6) vs. 0.5ct Topaz (Round, Blue, 5 x 5)
- 1ct Sapphire (Baguette, Blue, 6.93 x 4.62) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)