6ct Ruby (Cushion, 10.16×10.16mm, Red) vs 4ct Sapphire (Cushion, 8.88×8.88mm, Blue)
Quick summary: When looked from above (face-up position), 6ct Ruby (10.16×10.16mm, cushion cut) appears 31% larger than 4ct Sapphire (8.88×8.88mm, cushion cut). See below how they compare side-by-side on a ring and finger.
| 6ct Ruby (cushion cut) |
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4ct Sapphire (cushion cut) |
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red |
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| 10.16×10.16 mm | 8.88×8.88 mm | |
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Actual sizes of
6ct Ruby Cushion (10.16×10.16mm, Red)
and
4ct Sapphire Cushion (8.88×8.88mm, Blue)
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
Ruby and Sapphire 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.
| 6 Ct Ruby (Cushion) | 4 Ct Sapphire (Cushion) | |
| 10.16×10.16 mm | vs | 8.88×8.88 mm |
| 92.9 mm² | 70.97 mm² |
| 6ct Ruby Cushion (10.16×10.16mm) | |
| 4ct Sapphire Cushion (8.88×8.88mm) | |
| Difference: 31% (21.93 mm²) |
6ct Ruby Cushion (10.16×10.16mm) has approx. 31% more face-up area than 4ct Sapphire Cushion (8.88×8.88mm).
Popular comparisons:
- 6ct Ruby (Cushion, Red, 10.16 x 10.16) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 6ct Ruby (Cushion, Red, 10.16 x 10.16) vs. 4ct Sapphire (Oval, Blue, 12 x 8)
- 6ct Ruby (Cushion, Red, 10.16 x 10.16) vs. 6ct Emerald (Emerald, Green, 13.23 x 9.8)
- 6ct Ruby (Cushion, Red, 10.16 x 10.16) vs. 0.5ct Diamond (Round, White, 5.16 x 5.16)
- 6ct Ruby (Cushion, Red, 10.16 x 10.16) vs. 6ct Tourmaline (Cushion, Violet, 11.06 x 11.06)
- 4ct Ruby (Cushion, Red, 8.88 x 8.88) vs. 6ct Ruby (Cushion, Red, 10.16 x 10.16)
- 0.45ct Ruby (Cushion, Red, 4.28 x 4.28) vs. 0.33ct Sapphire (Trillion, Blue, 4.86 x 4.86)
- 3.45ct Ruby (Cushion, Red, 8.45 x 8.45) vs. 1ct Emerald (Cushion, Green, 6.37 x 6.37)
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.