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0.32ct Tourmaline (Round, 4.45×4.45mm, Green) vs 0.05ct Diamond (Oval, 2.99×1.99mm, White)


Quick summary: When looked from above (face-up position), 0.32ct Tourmaline (4.45×4.45mm, round cut) appears 3.2 times larger than 0.05ct Diamond (2.99×1.99mm, oval cut). See below how they compare side-by-side on a ring and finger.

0.32ct Tourmaline (round cut)
vs
 0.05ct Diamond (oval cut)
green
 
white
4.45×4.45 mm 2.99×1.99 mm
actual size
Actual size of 0.32ct Tourmaline (round cut, 4.45×4.45mm, Green color)   Actual size of 0.05ct Diamond (oval cut, 2.99×1.99mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 0.32ct Tourmaline (round cut, 4.45×4.45mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 0.05ct Diamond (oval cut, 2.99×1.99mm) 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
 27% vs 12%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.32ct Tourmaline Round (4.45×4.45mm, Green) and 0.05ct Diamond Oval (2.99×1.99mm, 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.


0.32 Ct Tourmaline (Round) 0.05 Ct Diamond (Oval)
4.45×4.45 mm vs 2.99×1.99 mm
15.55 mm²   4.88 mm²
Face-up size outline for 0.32ct Tourmaline (4.45×4.45mm, round cut)
Face-up size outline for 0.05ct Diamond (2.99×1.99mm, oval cut)
0.32ct Tourmaline Round (4.45×4.45mm)
0.05ct Diamond Oval (2.99×1.99mm)
Difference: 219% (10.67 mm²)
0.32ct Tourmaline (Round, 4.45×4.45mm) has approx. 219% more face-up area than 0.05ct Diamond (Oval, 2.99×1.99mm). In other words, it's 3.19x larger.


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