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2.5ct Tourmaline (Princess, 7.94×7.94mm, Light Red) vs 1ct Sapphire (Princess, 5.37×5.37mm, Blue)


Quick summary: When looked from above (face-up position), 2.5ct Tourmaline (7.94×7.94mm, princess cut) appears 2.2 times larger than 1ct Sapphire (5.37×5.37mm, princess cut). See below how they compare side-by-side on a ring and finger.

2.5ct Tourmaline (princess cut)
vs
 1ct Sapphire (princess cut)
light red
 
blue
7.94×7.94 mm 5.37×5.37 mm
actual size
Actual size of 2.5ct Tourmaline (princess cut, 7.94×7.94mm, Light Red color)   Actual size of 1ct Sapphire (princess cut, 5.37×5.37mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Red 2.5ct Tourmaline (princess cut, 7.94×7.94mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 1ct Sapphire (princess cut, 5.37×5.37mm) on a right ring and finger
Your settings
Ring
 Gold
Skin tone
 Light
Ring diameter
 16.9 mm
Ring width
 3.0 mm
Finger length
 64 mm
Finger coverage
 47% vs 32%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 2.5ct Tourmaline Princess (7.94×7.94mm, Light Red) and 1ct Sapphire Princess (5.37×5.37mm, 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.


2.5 Ct Tourmaline (Princess) 1 Ct Sapphire (Princess)
7.94×7.94 mm vs 5.37×5.37 mm
63.04 mm²   28.84 mm²
Face-up size outline for 2.5ct Tourmaline (7.94×7.94mm, princess cut)
Face-up size outline for 1ct Sapphire (5.37×5.37mm, princess cut)
2.5ct Tourmaline Princess (7.94×7.94mm)
1ct Sapphire Princess (5.37×5.37mm)
Difference: 119% (34.2 mm²)
2.5ct Tourmaline (Princess, 7.94×7.94mm) has approx. 119% more face-up area than 1ct Sapphire (Princess, 5.37×5.37mm). In other words, it's 2.19x larger.


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