0.65ct Sapphire (Round, 5.18×5.18mm, Blue) vs 1.15ct Diamond (Round, 6.81×6.81mm, White)
Quick summary: When looked from above (face-up position), 1.15ct Diamond (6.81×6.81mm, round cut) appears 73% larger than 0.65ct Sapphire (5.18×5.18mm, round cut). See below how they compare side-by-side on a ring and finger.
| 0.65ct Sapphire (round cut) |
vs
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1.15ct Diamond (round cut) |
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blue |
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| 5.18×5.18 mm | 6.81×6.81 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
0.65ct Sapphire Round (5.18×5.18mm, Blue)
and
1.15ct Diamond Round (6.81×6.81mm, White)
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.
| 0.65 Ct Sapphire (Round) | 1.15 Ct Diamond (Round) | |
| 5.18×5.18 mm | vs | 6.81×6.81 mm |
| 21.07 mm² | 36.42 mm² |
| 0.65ct Sapphire Round (5.18×5.18mm) | |
| 1.15ct Diamond Round (6.81×6.81mm) | |
| Difference: 73% (15.35 mm²) |
1.15ct Diamond (Round, 6.81×6.81mm) has approx. 73% more face-up area than 0.65ct Sapphire (Round, 5.18×5.18mm).
Popular comparisons:
- 0.65ct Sapphire (Round, Blue, 5.18 x 5.18) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 0.65ct Sapphire (Round, Blue, 5.18 x 5.18) vs. 0.7ct Diamond (Round, White, 5.77 x 5.77)
- 0.65ct Sapphire (Round, Blue, 5.18 x 5.18) vs. 0.5ct Diamond (Round, White, 5.16 x 5.16)
- 0.65ct Sapphire (Round, Blue, 5.18 x 5.18) vs. 0.65ct Sapphire (Emerald, Blue, 5.54 x 4.1)
- 0.65ct Sapphire (Round, Blue, 5.18 x 5.18) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1ct Sapphire (Round, Blue, 5.98 x 5.98) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 2ct Sapphire (Round, Blue, 7.53 x 7.53) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 1ct Sapphire (Round, Blue, 6.5 x 6.5) vs. 1ct Sapphire (Cushion, Blue, 6 x 6)