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0.05ct Tourmaline (Round, 2.4×2.4mm, Light Red) vs 0.05ct Diamond (Round, 2.39×2.39mm, White)


Quick summary: When looked from above (face-up position), 0.05ct Tourmaline (2.4×2.4mm, round cut) appears 0.7% larger than 0.05ct Diamond (2.39×2.39mm, round cut). See below how they compare side-by-side on a ring and finger.

0.05ct Tourmaline (round cut)
vs
 0.05ct Diamond (round cut)
light red
 
white
2.4×2.4 mm 2.39×2.39 mm
actual size
Actual size of 0.05ct Tourmaline (round cut, 2.4×2.4mm, Light Red color)   Actual size of 0.05ct Diamond (round cut, 2.39×2.39mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Red 0.05ct Tourmaline (round cut, 2.4×2.4mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 0.05ct Diamond (round cut, 2.39×2.39mm) 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
 15% vs 15%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.05ct Tourmaline Round (2.4×2.4mm, Light Red) and 0.05ct Diamond Round (2.39×2.39mm, White) 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.


0.05 Ct Tourmaline (Round) 0.05 Ct Diamond (Round)
2.4×2.4 mm vs 2.39×2.39 mm
4.52 mm²   4.49 mm²
Face-up size outline for 0.05ct Tourmaline (2.4×2.4mm, round cut)
Face-up size outline for 0.05ct Diamond (2.39×2.39mm, round cut)
0.05ct Tourmaline Round (2.4×2.4mm)
0.05ct Diamond Round (2.39×2.39mm)
Difference: 0.7% (0.03 mm²)
0.05ct Tourmaline (Round, 2.4×2.4mm) has approx. 0.7% more face-up area than 0.05ct Diamond (Round, 2.39×2.39mm).


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