28ct Hiddenite (Cushion, 18.14×18.14mm, Light Green ) vs 28ct Diopside (Cushion, 17.92×17.92mm, Green)
Quick summary: When looked from above (face-up position), 28ct Hiddenite (18.14×18.14mm, cushion cut) appears 2% larger than 28ct Diopside (17.92×17.92mm, cushion cut). See below how they compare side-by-side on a ring and finger.
| 28ct Hiddenite (cushion cut) |
vs
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28ct Diopside (cushion cut) |
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light green |
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| 18.14×18.14 mm | 17.92×17.92 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 Hiddenite Cushion (18.14×18.14mm, Light Green )
and
28ct Diopside Cushion (17.92×17.92mm, 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 Hiddenite for a given
carat weight, because it has higher specific gravity
(3.3 vs. 3.18 - this means it's "heavier" compared to Hiddenite 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 Hiddenite (Cushion) | 28 Ct Diopside (Cushion) | |
| 18.14×18.14 mm | vs | 17.92×17.92 mm |
| 296.15 mm² | 289.01 mm² |
| 28ct Hiddenite Cushion (18.14×18.14mm) | |
| 28ct Diopside Cushion (17.92×17.92mm) | |
| Difference: 2% (7.14 mm²) |
28ct Hiddenite (Cushion, 18.14×18.14mm) has approx. 2% more face-up area than 28ct Diopside (Cushion, 17.92×17.92mm).
Popular comparisons:
- 16ct Hiddenite (Cushion, Light Green , 15.21 x 15.21) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 4ct Hiddenite (Cushion, Light Green , 9.58 x 9.58) vs. 4ct Emerald (Round, Green, 10.82 x 10.82)
- 1ct Hiddenite (Cushion, Light Green , 6.04 x 6.04) vs. 1ct Fluorite (Cushion, Bluish Green, 6.04 x 6.04)
- 4ct Hiddenite (Cushion, Light Green , 9.58 x 9.58) vs. 4ct Fluorite (Cushion, Bluish Green, 9.58 x 9.58)
- 20ct Hiddenite (Cushion, Light Green , 16.38 x 16.38) vs. 20ct Fluorite (Cushion, Bluish Green, 16.38 x 16.38)
- 20ct Hiddenite (Cushion, Light Green , 16.38 x 16.38) vs. 20ct Kunzite (Cushion, Light Purple, 16.38 x 16.38)
- 2.7ct Ruby (Pear, Red, 10 x 7) vs. 3ct Ruby (Emerald, Red, 9 x 7)
- 1.5ct Tourmaline (Round, Light Red, 7.45 x 7.45) vs. 1.5ct Sapphire (Round, Light Blue, 6.84 x 6.84)
- 1ct Kyanite (Oval, Blue, 7.77 x 5.18) vs. 1ct Tanzanite (Oval, Blue, 8.07 x 5.38)