4ct Tourmaline (Princess, 9.12×9.12mm, Purple) vs 4ct Sapphire (Princess, 8.34×8.34mm, Blue)
Quick summary: When looked from above (face-up position), 4ct Tourmaline (9.12×9.12mm, princess cut) appears 20% larger than 4ct Sapphire (8.34×8.34mm, princess cut). See below how they compare side-by-side on a ring and finger.
| 4ct Tourmaline (princess cut) |
vs
|
4ct Sapphire (princess cut) |
|
purple |
|
|
| 9.12×9.12 mm | 8.34×8.34 mm | |
| actual size | ||
|
|
|
|
|
||
Actual size is set for screen
|
Ring:
Skin tone:
Ring width: 3.0 mm
|
|
64 mm |
|
|
|||||||||||||||||
|
|||||||||||||||||||||
Actual sizes of
4ct Tourmaline Princess (9.12×9.12mm, Purple)
and
4ct Sapphire Princess (8.34×8.34mm, 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
All things being equal, Sapphire will face-up smaller than Tourmaline for a given
carat weight, because it has higher specific gravity
(4 vs. 3.06 - this means it's "heavier" compared to Tourmaline 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.
| 4 Ct Tourmaline (Princess) | 4 Ct Sapphire (Princess) | |
| 9.12×9.12 mm | vs | 8.34×8.34 mm |
| 83.17 mm² | 69.56 mm² |
| 4ct Tourmaline Princess (9.12×9.12mm) | |
| 4ct Sapphire Princess (8.34×8.34mm) | |
| Difference: 20% (13.61 mm²) |
4ct Tourmaline (Princess, 9.12×9.12mm) has approx. 20% more face-up area than 4ct Sapphire (Princess, 8.34×8.34mm).
Popular comparisons:
- 15ct Tourmaline (Princess, Light Red, 14.43 x 14.43) vs. 1ct Amethyst (Princess, Violet, 6.17 x 6.17)
- 2.07ct Tourmaline (Princess, Bluish Green, 8.3 x 8.3) vs. 2.07ct Tourmaline (Princess, Bluish Green, 8 x 8)
- 1.2ct Tourmaline (Princess, Dark Green, 6.22 x 6.22) vs. 0.71ct Tourmaline (Princess, Dark Green, 5.22 x 5.22)
- 0.2ct Tourmaline (Princess, Purple, 3.42 x 3.42) vs. 0.2ct Morganite (Princess, Light Red, 3.58 x 3.58)
- 2.5ct Tourmaline (Princess, Bluish Green, 7.94 x 7.94) vs. 2.27ct Tourmaline (Princess, Bluish Green, 7.69 x 7.69)
- 2.5ct Tourmaline (Princess, Light Red, 7.94 x 7.94) vs. 1ct Sapphire (Princess, Blue, 5.37 x 5.37)
- 2ct Tourmaline (Princess, Blue, 7.37 x 7.37) vs. 2ct Tourmaline (Asscher, Blue, 7.35 x 7.35)
- 0.91ct Tourmaline (Princess, Light Red, 6.3 x 6.3) vs. 1ct Tourmaline (Princess, Light Bluish Green, 6.6 x 6.6)
- 1ct Tourmaline (Princess, Light Green , 5.85 x 5.85) vs. 1ct Diamond (Princess, White, 5.51 x 5.51)