0.3ct Diamond (Trillion, 5.18×5.18mm, White) vs 3ct Sapphire (Cushion, 8.06×8.06mm, Dark Bluish Green)
Quick summary: When looked from above (face-up position), 3ct Sapphire (8.06×8.06mm, cushion cut) appears 3.5 times larger than 0.3ct Diamond (5.18×5.18mm, trillion cut). See below how they compare side-by-side on a ring and finger.
| 0.3ct Diamond (trillion cut) |
vs
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3ct Sapphire (cushion cut) |
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white |
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| 5.18×5.18 mm | 8.06×8.06 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
0.3ct Diamond Trillion (5.18×5.18mm, White)
and
3ct Sapphire Cushion (8.06×8.06mm, Dark Bluish 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, 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.
| 0.3 Ct Diamond (Trillion) | 3 Ct Sapphire (Cushion) | |
| 5.18×5.18 mm | vs | 8.06×8.06 mm |
| 16.64 mm² | 58.47 mm² |
| 0.3ct Diamond Trillion (5.18×5.18mm) | |
| 3ct Sapphire Cushion (8.06×8.06mm) | |
| Difference: 251% (41.83 mm²) |
3ct Sapphire (Cushion, 8.06×8.06mm) has approx. 251% more face-up area than 0.3ct Diamond (Trillion, 5.18×5.18mm). In other words, it's 3.51x larger.
Popular comparisons:
- 0.3ct Diamond (Trillion, White, 5.18 x 5.18) vs. 0.4ct Diamond (Round, White, 4.79 x 4.79)
- 0.3ct Diamond (Trillion, White, 5.18 x 5.18) vs. 0.3ct Diamond (Round, White, 4.35 x 4.35)
- 0.3ct Diamond (Trillion, White, 5.18 x 5.18) vs. 0.37ct Diamond (Trillion, White, 5.55 x 5.55)
- 0.3ct Diamond (Trillion, White, 5.18 x 5.18) vs. 0.5ct Diamond (Round, White, 5.16 x 5.16)
- 0.3ct Diamond (Trillion, White, 5.18 x 5.18) vs. 0.5ct Diamond (Trillion, White, 6.14 x 6.14)
- 0.3ct Diamond (Trillion, White, 5.18 x 5.18) vs. 0.05ct Diamond (Round, White, 2.39 x 2.39)
- 0.3ct Diamond (Trillion, White, 5.18 x 5.18) vs. 0.25ct Diamond (Trillion, White, 4.87 x 4.87)
- 0.5ct Diamond (Trillion, White, 6.14 x 6.14) vs. 0.25ct Diamond (Trillion, White, 4.87 x 4.87)