3.5ct Diamond (Cushion, 8.85×8.85mm, White) vs 3.65ct Sapphire (Cushion, 8.61×8.61mm, Blue)
Quick summary: When looked from above (face-up position), 3.5ct Diamond (8.85×8.85mm, cushion cut) appears 6% larger than 3.65ct Sapphire (8.61×8.61mm, cushion cut). See below how they compare side-by-side on a ring and finger.
| 3.5ct Diamond (cushion cut) |
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3.65ct Sapphire (cushion cut) |
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white |
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| 8.85×8.85 mm | 8.61×8.61 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
3.5ct Diamond Cushion (8.85×8.85mm, White)
and
3.65ct Sapphire Cushion (8.61×8.61mm, Blue)
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, Sapphire will face-up smaller than Diamond for a given
carat weight, because it has higher specific gravity
(4 vs. 3.52 - this means it's "heavier" compared to Diamond 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.
| 3.5 Ct Diamond (Cushion) | 3.65 Ct Sapphire (Cushion) | |
| 8.85×8.85 mm | vs | 8.61×8.61 mm |
| 70.49 mm² | 66.72 mm² |
| 3.5ct Diamond Cushion (8.85×8.85mm) | |
| 3.65ct Sapphire Cushion (8.61×8.61mm) | |
| Difference: 6% (3.77 mm²) |
3.5ct Diamond (Cushion, 8.85×8.85mm) has approx. 6% more face-up area than 3.65ct Sapphire (Cushion, 8.61×8.61mm).
Popular comparisons:
- 3.5ct Diamond (Cushion, White, 8.85 x 8.85) vs. 1.25ct Diamond (Pear, White, 9.74 x 5.87)
- 3.5ct Diamond (Cushion, White, 8.85 x 8.85) vs. 3.5ct Diamond (Emerald, White, 10.14 x 7.51)
- 3.5ct Diamond (Cushion, White, 8.85 x 8.85) vs. 4ct Diamond (Cushion, White, 9.25 x 9.25)
- 3.5ct Diamond (Cushion, White, 8.85 x 8.85) vs. 3.5ct Sapphire (Cushion, Blue, 8.49 x 8.49)
- 3.5ct Diamond (Cushion, White, 8.85 x 8.85) vs. 3.65ct Sapphire (Cushion, Blue, 8.88 x 7.74)
- 3.5ct Diamond (Cushion, White, 8.85 x 8.85) vs. 4.16ct Diamond (Princess, Yellow, 8.85 x 8.6)
- 3.5ct Diamond (Cushion, White, 8.85 x 8.85) vs. 3.7ct Diamond (Emerald, White, 10.33 x 7.65)
- 3.5ct Diamond (Cushion, White, 8.85 x 8.85) vs. 3ct Diamond (Cushion, White, 8.4 x 8.4)