0.45ct Sapphire (Round, 4.58×4.58mm, Blue) vs 0.45ct Diamond (Pear, 6.94×4.18mm, White)
Quick summary: When looked from above (face-up position), 0.45ct Diamond (6.94×4.18mm, pear cut) appears 29% larger than 0.45ct Sapphire (4.58×4.58mm, round cut). See below how they compare side-by-side on a ring and finger.
| 0.45ct Sapphire (round cut) |
vs
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0.45ct Diamond (pear cut) |
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blue |
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| 4.58×4.58 mm | 6.94×4.18 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
0.45ct Sapphire Round (4.58×4.58mm, Blue)
and
0.45ct Diamond Pear (6.94×4.18mm, 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.
| 0.45 Ct Sapphire (Round) | 0.45 Ct Diamond (Pear) | |
| 4.58×4.58 mm | vs | 6.94×4.18 mm |
| 16.47 mm² | 21.18 mm² |
| 0.45ct Sapphire Round (4.58×4.58mm) | |
| 0.45ct Diamond Pear (6.94×4.18mm) | |
| Difference: 29% (4.71 mm²) |
0.45ct Diamond (Pear, 6.94×4.18mm) has approx. 29% more face-up area than 0.45ct Sapphire (Round, 4.58×4.58mm).
Popular comparisons:
- 0.45ct Sapphire (Round, Blue, 4.58 x 4.58) vs. 0.5ct Sapphire (Oval, Blue, 6 x 4)
- 0.45ct Sapphire (Round, Blue, 4.58 x 4.58) vs. 0.43ct Spinel (Pear, Red, 6.49 x 3.91)
- 0.45ct Sapphire (Round, Blue, 4.58 x 4.58) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 0.45ct Sapphire (Round, Blue, 4.58 x 4.58) vs. 0.89ct Sapphire (Round, Blue, 5.75 x 5.75)
- 0.45ct Sapphire (Round, Blue, 4.58 x 4.58) vs. 0.6ct Sapphire (Round, Blue, 5.04 x 5.04)
- 0.45ct Sapphire (Round, Blue, 4.58 x 4.58) vs. 0.7ct Sapphire (Round, Blue, 5.31 x 5.31)
- 0.45ct Sapphire (Round, Blue, 4.58 x 4.58) vs. 0.8ct Sapphire (Oval, Blue, 7.02 x 4.68)
- 0.45ct Sapphire (Round, Blue, 4.58 x 4.58) vs. 0.45ct Topaz (Round, Blue, 4.78 x 4.78)