28ct Apatite (Radiant, 18.02×18.02mm, Green) vs 28ct Peridot (Radiant, 17.77×17.77mm, Yellowish Green)
Quick summary: When looked from above (face-up position), 28ct Apatite (18.02×18.02mm, radiant cut) appears 3% larger than 28ct Peridot (17.77×17.77mm, radiant cut). See below how they compare side-by-side on a ring and finger.
| 28ct Apatite (radiant cut) |
vs
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28ct Peridot (radiant cut) |
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green |
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| 18.02×18.02 mm | 17.77×17.77 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
28ct Apatite Radiant (18.02×18.02mm, Green)
and
28ct Peridot Radiant (17.77×17.77mm, Yellowish 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, Peridot will face-up smaller than Apatite for a given
carat weight, because it has higher specific gravity
(3.34 vs. 3.2 - this means it's "heavier" compared to Apatite 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.
| 28 Ct Apatite (Radiant) | 28 Ct Peridot (Radiant) | |
| 18.02×18.02 mm | vs | 17.77×17.77 mm |
| 308.48 mm² | 299.98 mm² |
| 28ct Apatite Radiant (18.02×18.02mm) | |
| 28ct Peridot Radiant (17.77×17.77mm) | |
| Difference: 3% (8.5 mm²) |
28ct Apatite (Radiant, 18.02×18.02mm) has approx. 3% more face-up area than 28ct Peridot (Radiant, 17.77×17.77mm).
Popular comparisons:
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- 1ct Sapphire (Baguette, Blue, 6.93 x 4.62) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Topaz (Round, Blue, 6 x 6) vs. 0.5ct Topaz (Round, Blue, 5 x 5)