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11ct Topaz (Round, 13.86×13.86mm, Blue) vs 2ct Diamond (Round, 8.19×8.19mm, White)


Quick summary: When looked from above (face-up position), 11ct Topaz (13.86×13.86mm, round cut) appears 2.9 times larger than 2ct Diamond (8.19×8.19mm, round cut). See below how they compare side-by-side on a ring and finger.

11ct Topaz (round cut)
vs
 2ct Diamond (round cut)
blue
 
white
13.86×13.86 mm 8.19×8.19 mm
actual size
Actual size of 11ct Topaz (round cut, 13.86×13.86mm, Blue color)   Actual size of 2ct Diamond (round cut, 8.19×8.19mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 11ct Topaz (round cut, 13.86×13.86mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 2ct Diamond (round cut, 8.19×8.19mm) 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
 83% vs 49%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 11ct Topaz Round (13.86×13.86mm, Blue) and 2ct Diamond Round (8.19×8.19mm, 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, 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.


11 Ct Topaz (Round) 2 Ct Diamond (Round)
13.86×13.86 mm vs 8.19×8.19 mm
150.87 mm²   52.68 mm²
Face-up size outline for 11ct Topaz (13.86×13.86mm, round cut)
Face-up size outline for 2ct Diamond (8.19×8.19mm, round cut)
11ct Topaz Round (13.86×13.86mm)
2ct Diamond Round (8.19×8.19mm)
Difference: 186% (98.19 mm²)
11ct Topaz (Round, 13.86×13.86mm) has approx. 186% more face-up area than 2ct Diamond (Round, 8.19×8.19mm). In other words, it's 2.86x larger.


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