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1.06ct Diamond (Oval, 8.19×5.88mm, White) vs 1.71ct Topaz (Emerald, 7.97×5.9mm, Blue)


Quick summary: When looked from above (face-up position), 1.71ct Topaz (7.97×5.9mm, emerald cut) appears 11% larger than 1.06ct Diamond (8.19×5.88mm, oval cut). See below how they compare side-by-side on a ring and finger.

1.06ct Diamond (oval cut)
vs
 1.71ct Topaz (emerald cut)
white
 
blue
8.19×5.88 mm 7.97×5.9 mm
actual size
Actual size of 1.06ct Diamond (oval cut, 8.19×5.88mm, White color)   Actual size of 1.71ct Topaz (emerald cut, 7.97×5.9mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 1.06ct Diamond (oval cut, 8.19×5.88mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 1.71ct Topaz (emerald cut, 7.97×5.9mm) 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
 35% vs 35%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1.06ct Diamond Oval (8.19×5.88mm, White) and 1.71ct Topaz Emerald (7.97×5.9mm, Blue) 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.


1.06 Ct Diamond (Oval) 1.71 Ct Topaz (Emerald)
8.19×5.88 mm vs 7.97×5.9 mm
39.49 mm²   43.73 mm²
Face-up size outline for 1.71ct Topaz (7.97×5.9mm, emerald cut)
Face-up size outline for 1.06ct Diamond (8.19×5.88mm, oval cut)
1.06ct Diamond Oval (8.19×5.88mm)
1.71ct Topaz Emerald (7.97×5.9mm)
Difference: 11% (4.24 mm²)
1.71ct Topaz (Emerald, 7.97×5.9mm) has approx. 11% more face-up area than 1.06ct Diamond (Oval, 8.19×5.88mm).


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