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0.24ct Diamond (Round, 4.04×4.04mm, White) vs 0.9ct Topaz (Round, 6.02×6.02mm, Light Bluish Green)


Quick summary: When looked from above (face-up position), 0.9ct Topaz (6.02×6.02mm, round cut) appears 2.2 times larger than 0.24ct Diamond (4.04×4.04mm, round cut). See below how they compare side-by-side on a ring and finger.

0.24ct Diamond (round cut)
vs
 0.9ct Topaz (round cut)
white
 
light bluish green
4.04×4.04 mm 6.02×6.02 mm
actual size
Actual size of 0.24ct Diamond (round cut, 4.04×4.04mm, White color)   Actual size of 0.9ct Topaz (round cut, 6.02×6.02mm, Light 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 0.24ct Diamond (round cut, 4.04×4.04mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Bluish Green 0.9ct Topaz (round cut, 6.02×6.02mm) 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
 24% vs 36%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.24ct Diamond Round (4.04×4.04mm, White) and 0.9ct Topaz Round (6.02×6.02mm, Light 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, Topaz will face-up slightly smaller than Diamond for a given carat weight, because it has higher specific gravity (3.53 vs. 3.52 - this means it's "slightly heavier" compared to Diamond 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.


0.24 Ct Diamond (Round) 0.9 Ct Topaz (Round)
4.04×4.04 mm vs 6.02×6.02 mm
12.82 mm²   28.46 mm²
Face-up size outline for 0.9ct Topaz (6.02×6.02mm, round cut)
Face-up size outline for 0.24ct Diamond (4.04×4.04mm, round cut)
0.24ct Diamond Round (4.04×4.04mm)
0.9ct Topaz Round (6.02×6.02mm)
Difference: 122% (15.64 mm²)
0.9ct Topaz (Round, 6.02×6.02mm) has approx. 122% more face-up area than 0.24ct Diamond (Round, 4.04×4.04mm). In other words, it's 2.22x larger.


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