20ct Sapphire (Round, 16.23×16.23mm, Blue) vs 3ct Ruby (Round, 8.62×8.62mm, Red)
Quick summary: When looked from above (face-up position), 20ct Sapphire (16.23×16.23mm, round cut) appears 3.5 times larger than 3ct Ruby (8.62×8.62mm, round cut). See below how they compare side-by-side on a ring and finger.
| 20ct Sapphire (round cut) |
vs
|
3ct Ruby (round cut) |
|
blue |
|
|
| 16.23×16.23 mm | 8.62×8.62 mm | |
| actual size | ||
|
|
|
|
|
||
Actual size is set for screen
|
Ring:
Skin tone:
Ring width: 3.0 mm
|
|
64 mm |
|
|
|||||||||||||||||
|
|||||||||||||||||||||
Actual sizes of
20ct Sapphire Round (16.23×16.23mm, Blue)
and
3ct Ruby Round (8.62×8.62mm, 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.
| 20 Ct Sapphire (Round) | 3 Ct Ruby (Round) | |
| 16.23×16.23 mm | vs | 8.62×8.62 mm |
| 206.88 mm² | 58.36 mm² |
| 20ct Sapphire Round (16.23×16.23mm) | |
| 3ct Ruby Round (8.62×8.62mm) | |
| Difference: 254% (148.52 mm²) |
20ct Sapphire (Round, 16.23×16.23mm) has approx. 254% more face-up area than 3ct Ruby (Round, 8.62×8.62mm). In other words, it's 3.54x larger.
Popular comparisons:
- 20ct Sapphire (Round, Blue, 16.23 x 16.23) vs. 9ct Emerald (Round, Green, 14.18 x 14.18)
- 20ct Sapphire (Round, Blue, 16.23 x 16.23) vs. 8ct Diamond (Emerald, White, 13.37 x 9.9)
- 20ct Sapphire (Round, Blue, 16.23 x 16.23) vs. 10ct Emerald (Marquise, Green, 24.24 x 12.12)
- 20ct Sapphire (Round, Blue, 16.23 x 16.23) vs. 7ct Emerald (Round, Green, 13.04 x 13.04)
- 20ct Sapphire (Round, Blue, 16.23 x 16.23) vs. 5ct Emerald (Round, Green, 11.65 x 11.65)
- 20ct Sapphire (Round, Blue, 16.23 x 16.23) vs. 6ct Sapphire (Round, Blue, 10.86 x 10.86)
- 20ct Sapphire (Round, Blue, 16.23 x 16.23) vs. 1.2ct Diamond (Round, White, 6.91 x 6.91)
- 20ct Sapphire (Round, Blue, 16.23 x 16.23) vs. 18ct Sapphire (Round, Blue, 15.67 x 15.67)