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6ct Sapphire (Radiant, 10.01×10.01mm, Blue) vs 6ct Topaz (Radiant, 10.44×10.44mm, Blue)


Quick summary: When looked from above (face-up position), 6ct Topaz (10.44×10.44mm, radiant cut) appears 9% larger than 6ct Sapphire (10.01×10.01mm, radiant cut). See below how they compare side-by-side on a ring and finger.

6ct Sapphire (radiant cut)
vs
 6ct Topaz (radiant cut)
blue
 
blue
10.01×10.01 mm 10.44×10.44 mm
actual size
Actual size of 6ct Sapphire (radiant cut, 10.01×10.01mm, Blue color)   Actual size of 6ct Topaz (radiant cut, 10.44×10.44mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 6ct Sapphire (radiant cut, 10.01×10.01mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 6ct Topaz (radiant cut, 10.44×10.44mm) 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
 60% vs 62%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 6ct Sapphire Radiant (10.01×10.01mm, Blue) and 6ct Topaz Radiant (10.44×10.44mm, 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, Sapphire will face-up smaller than Topaz for a given carat weight, because it has higher specific gravity (4 vs. 3.53 - this means it's "heavier" compared to Topaz 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.


6 Ct Sapphire (Radiant) 6 Ct Topaz (Radiant)
10.01×10.01 mm vs 10.44×10.44 mm
95.19 mm²   103.54 mm²
Face-up size outline for 6ct Topaz (10.44×10.44mm, radiant cut)
Face-up size outline for 6ct Sapphire (10.01×10.01mm, radiant cut)
6ct Sapphire Radiant (10.01×10.01mm)
6ct Topaz Radiant (10.44×10.44mm)
Difference: 9% (8.35 mm²)
6ct Topaz (Radiant, 10.44×10.44mm) has approx. 9% more face-up area than 6ct Sapphire (Radiant, 10.01×10.01mm).


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