1ct Diamond (Trillion, 7.74×7.74mm, White) vs 1.2ct Sapphire (Trillion, 7.47×7.47mm, Light Purple)
Quick summary: When looked from above (face-up position), 1ct Diamond (7.74×7.74mm, trillion cut) appears 7% larger than 1.2ct Sapphire (7.47×7.47mm, trillion cut). See below how they compare side-by-side on a ring and finger.
| 1ct Diamond (trillion cut) |
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1.2ct Sapphire (trillion cut) |
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white |
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| 7.74×7.74 mm | 7.47×7.47 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
1ct Diamond Trillion (7.74×7.74mm, White)
and
1.2ct Sapphire Trillion (7.47×7.47mm, Light Purple)
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.
| 1 Ct Diamond (Trillion) | 1.2 Ct Sapphire (Trillion) | |
| 7.74×7.74 mm | vs | 7.47×7.47 mm |
| 37.14 mm² | 34.6 mm² |
| 1ct Diamond Trillion (7.74×7.74mm) | |
| 1.2ct Sapphire Trillion (7.47×7.47mm) | |
| Difference: 7% (2.54 mm²) |
1ct Diamond (Trillion, 7.74×7.74mm) has approx. 7% more face-up area than 1.2ct Sapphire (Trillion, 7.47×7.47mm).
Popular comparisons:
- 1ct Diamond (Trillion, White, 7.74 x 7.74) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Diamond (Trillion, White, 7.74 x 7.74) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1ct Diamond (Trillion, White, 7.74 x 7.74) vs. 3ct Sapphire (Cushion, Dark Bluish Green, 8.06 x 8.06)
- 1ct Diamond (Trillion, White, 7.74 x 7.74) vs. 5.59ct Sapphire (Cushion, Dark Bluish Green, 9.92 x 9.92)
- 1ct Diamond (Trillion, White, 7.74 x 7.74) vs. 0.5ct Diamond (Trillion, White, 6.14 x 6.14)
- 1ct Diamond (Trillion, White, 7.74 x 7.74) vs. 1.2ct Sapphire (Oval, Light Purple, 8.04 x 5.36)
- 1ct Diamond (Trillion, White, 7.74 x 7.74) vs. 1.2ct Sapphire (Round, Dark Blue, 6 x 6)
- 1ct Diamond (Trillion, White, 7.74 x 7.74) vs. 1ct Diamond (Cushion, White, 5.83 x 5.83)