4ct Sapphire (Round, 9.49×9.49mm, Blue) vs 2ct Ruby (Round, 7.53×7.53mm, Red)
Quick summary: When looked from above (face-up position), 4ct Sapphire (9.49×9.49mm, round cut) appears 59% larger than 2ct Ruby (7.53×7.53mm, round cut). See below how they compare side-by-side on a ring and finger.
| 4ct Sapphire (round cut) |
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2ct Ruby (round cut) |
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blue |
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| 9.49×9.49 mm | 7.53×7.53 mm | |
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Actual sizes of
4ct Sapphire Round (9.49×9.49mm, Blue)
and
2ct Ruby Round (7.53×7.53mm, Red)
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
Sapphire and Ruby have the same specific gravity so their face-up size
depends on the weight, shape and 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.
| 4 Ct Sapphire (Round) | 2 Ct Ruby (Round) | |
| 9.49×9.49 mm | vs | 7.53×7.53 mm |
| 70.73 mm² | 44.53 mm² |
| 4ct Sapphire Round (9.49×9.49mm) | |
| 2ct Ruby Round (7.53×7.53mm) | |
| Difference: 59% (26.2 mm²) |
4ct Sapphire Round (9.49×9.49mm) has approx. 59% more face-up area than 2ct Ruby Round (7.53×7.53mm).
Popular comparisons:
- 4ct Sapphire (Round, Blue, 9.49 x 9.49) vs. 4ct Diamond (Round, White, 10.32 x 10.32)
- 4ct Sapphire (Round, Blue, 9.49 x 9.49) vs. 4ct Emerald (Round, Green, 10.82 x 10.82)
- 4ct Sapphire (Round, Blue, 9.49 x 9.49) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 4ct Sapphire (Round, Blue, 9.49 x 9.49) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 4ct Sapphire (Round, Blue, 9.49 x 9.49) vs. 3.7ct Sapphire (Round, Blue, 9 x 9)
- 4ct Sapphire (Round, Blue, 9.49 x 9.49) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 4ct Sapphire (Round, Blue, 9.49 x 9.49) vs. 3.75ct Emerald (Round, Green, 10.59 x 10.59)
- 4ct Sapphire (Round, Blue, 9.49 x 9.49) vs. 4ct Sapphire (Emerald, Blue, 10.14 x 7.51)
Enter your screen size (diagonal)
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Actual size is currently adjusted to screen.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.