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9ct Diamond (Emerald, 13.89×10.29mm, White) vs 8.5ct Topaz (Emerald, 13.58×10.06mm, Blue)


Quick summary: When looked from above (face-up position), 9ct Diamond (13.89×10.29mm, emerald cut) appears 5% larger than 8.5ct Topaz (13.58×10.06mm, emerald cut). See below how they compare side-by-side on a ring and finger.

9ct Diamond (emerald cut)
vs
 8.5ct Topaz (emerald cut)
white
 
blue
13.89×10.29 mm 13.58×10.06 mm
actual size
Actual size of 9ct Diamond (emerald cut, 13.89×10.29mm, White color)   Actual size of 8.5ct Topaz (emerald cut, 13.58×10.06mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 9ct Diamond (emerald cut, 13.89×10.29mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 8.5ct Topaz (emerald cut, 13.58×10.06mm) 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
 61% vs 60%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 9ct Diamond Emerald (13.89×10.29mm, White) and 8.5ct Topaz Emerald (13.58×10.06mm, 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.


9 Ct Diamond (Emerald) 8.5 Ct Topaz (Emerald)
13.89×10.29 mm vs 13.58×10.06 mm
132.92 mm²   127.05 mm²
Face-up size outline for 9ct Diamond (13.89×10.29mm, emerald cut)
Face-up size outline for 8.5ct Topaz (13.58×10.06mm, emerald cut)
9ct Diamond Emerald (13.89×10.29mm)
8.5ct Topaz Emerald (13.58×10.06mm)
Difference: 5% (5.87 mm²)
9ct Diamond (Emerald, 13.89×10.29mm) has approx. 5% more face-up area than 8.5ct Topaz (Emerald, 13.58×10.06mm).


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