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1ct Diamond (Princess, 5.5×5.5mm, White) vs 2.07ct Tourmaline (Princess, 8×8mm, Bluish Green)


Quick summary: When looked from above (face-up position), 2.07ct Tourmaline (8×8mm, princess cut) appears 2.1 times larger than 1ct Diamond (5.5×5.5mm, princess cut). See below how they compare side-by-side on a ring and finger.

1ct Diamond (princess cut)
vs
2.07ct Tourmaline (princess cut)
white
 
bluish green
5.5×5.5 mm 8×8 mm
actual size
Actual size of 1ct Diamond (princess cut, 5.5×5.5mm, White color)   Actual size of 2.07ct Tourmaline (princess cut, 8×8mm, Bluish Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 1ct Diamond (princess cut, 5.5×5.5mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 2.07ct Tourmaline (princess cut, 8×8mm) 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
33% vs 48%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1ct Diamond Princess (5.5×5.5mm, White) and 2.07ct Tourmaline Princess (8×8mm, Bluish Green) 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, Diamond will face-up smaller than Tourmaline for a given carat weight, because it has higher specific gravity (3.52 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.


1 Ct Diamond (Princess) 2.07 Ct Tourmaline (Princess)
5.5×5.5 mm vs 8×8 mm
30.25 mm²   64 mm²
Face-up size outline for 2.07ct Tourmaline (8×8mm, princess cut)
Face-up size outline for 1ct Diamond (5.5×5.5mm, princess cut)
1ct Diamond Princess (5.5×5.5mm)
2.07ct Tourmaline Princess (8×8mm)
Difference: 112% (33.75 mm²)
2.07ct Tourmaline (Princess, 8×8mm) has approx. 112% more face-up area than 1ct Diamond (Princess, 5.5×5.5mm). In other words, it's 2.12x larger.


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