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11ct Topaz (Oval, 17.78×11.85mm, Blue) vs 11ct Quartz (Oval, 19.56×13.04mm, Brown)


Quick summary: When looked from above (face-up position), 11ct Quartz (19.56×13.04mm, oval cut) appears 21% larger than 11ct Topaz (17.78×11.85mm, oval cut). See below how they compare side-by-side on a ring and finger.

11ct Topaz (oval cut)
vs
 11ct Quartz (oval cut)
blue
 
brown
17.78×11.85 mm 19.56×13.04 mm
actual size
Actual size of 11ct Topaz (oval cut, 17.78×11.85mm, Blue color)   Actual size of 11ct Quartz (oval cut, 19.56×13.04mm, Brown 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 (oval cut, 17.78×11.85mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Brown 11ct Quartz (oval cut, 19.56×13.04mm) 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
 71% vs 78%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 11ct Topaz Oval (17.78×11.85mm, Blue) and 11ct Quartz Oval (19.56×13.04mm, Brown) 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.


11 Ct Topaz (Oval) 11 Ct Quartz (Oval)
17.78×11.85 mm vs 19.56×13.04 mm
172.77 mm²   209.15 mm²
Face-up size outline for 11ct Quartz (19.56×13.04mm, oval cut)
Face-up size outline for 11ct Topaz (17.78×11.85mm, oval cut)
11ct Topaz Oval (17.78×11.85mm)
11ct Quartz Oval (19.56×13.04mm)
Difference: 21% (36.38 mm²)
11ct Quartz (Oval, 19.56×13.04mm) has approx. 21% more face-up area than 11ct Topaz (Oval, 17.78×11.85mm).


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