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22.5ct Quartz (Emerald, 20.68×15.32mm, Brown) vs 9.47ct Topaz (Round, 13.19×13.19mm, Blue)


Quick summary: When looked from above (face-up position), 22.5ct Quartz (20.68×15.32mm, emerald cut) appears 2.2 times larger than 9.47ct Topaz (13.19×13.19mm, round cut). See below how they compare side-by-side on a ring and finger.

22.5ct Quartz (emerald cut)
vs
 9.47ct Topaz (round cut)
brown
 
blue
20.68×15.32 mm 13.19×13.19 mm
actual size
Actual size of 22.5ct Quartz (emerald cut, 20.68×15.32mm, Brown color)   Actual size of 9.47ct Topaz (round cut, 13.19×13.19mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Brown 22.5ct Quartz (emerald cut, 20.68×15.32mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 9.47ct Topaz (round cut, 13.19×13.19mm) 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
 91% vs 79%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 22.5ct Quartz Emerald (20.68×15.32mm, Brown) and 9.47ct Topaz Round (13.19×13.19mm, 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 smaller than Quartz for a given carat weight, because it has higher specific gravity (3.53 vs. 2.65 - this means it's "heavier" compared to Quartz 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.


22.5 Ct Quartz (Emerald) 9.47 Ct Topaz (Round)
20.68×15.32 mm vs 13.19×13.19 mm
294.64 mm²   136.64 mm²
Face-up size outline for 22.5ct Quartz (20.68×15.32mm, emerald cut)
Face-up size outline for 9.47ct Topaz (13.19×13.19mm, round cut)
22.5ct Quartz Emerald (20.68×15.32mm)
9.47ct Topaz Round (13.19×13.19mm)
Difference: 116% (158 mm²)
22.5ct Quartz (Emerald, 20.68×15.32mm) has approx. 116% more face-up area than 9.47ct Topaz (Round, 13.19×13.19mm). In other words, it's 2.16x larger.


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