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1ct Topaz (Round, 6.23×6.23mm, White) vs 1ct Quartz (Round, 6.86×6.86mm, Light Gray)


Quick summary: When looked from above (face-up position), 1ct Quartz (6.86×6.86mm, round cut) appears 21% larger than 1ct Topaz (6.23×6.23mm, round cut). See below how they compare side-by-side on a ring and finger.

1ct Topaz (round cut)
vs
 1ct Quartz (round cut)
white
 
light gray
6.23×6.23 mm 6.86×6.86 mm
actual size
Actual size of 1ct Topaz (round cut, 6.23×6.23mm, White color)   Actual size of 1ct Quartz (round cut, 6.86×6.86mm, Light Gray color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 1ct Topaz (round cut, 6.23×6.23mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Gray 1ct Quartz (round cut, 6.86×6.86mm) 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
 37% vs 41%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1ct Topaz Round (6.23×6.23mm, White) and 1ct Quartz Round (6.86×6.86mm, Light Gray) 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.


1 Ct Topaz (Round) 1 Ct Quartz (Round)
6.23×6.23 mm vs 6.86×6.86 mm
30.48 mm²   36.96 mm²
Face-up size outline for 1ct Quartz (6.86×6.86mm, round cut)
Face-up size outline for 1ct Topaz (6.23×6.23mm, round cut)
1ct Topaz Round (6.23×6.23mm)
1ct Quartz Round (6.86×6.86mm)
Difference: 21% (6.48 mm²)
1ct Quartz (Round, 6.86×6.86mm) has approx. 21% more face-up area than 1ct Topaz (Round, 6.23×6.23mm).


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