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8ct Sapphire (Cushion, 11.07×11.07mm, Blue) vs 8ct Topaz (Cushion, 11.54×11.54mm, Blue)


Quick summary: When looked from above (face-up position), 8ct Topaz (11.54×11.54mm, cushion cut) appears 9% larger than 8ct Sapphire (11.07×11.07mm, cushion cut). See below how they compare side-by-side on a ring and finger.

8ct Sapphire (cushion cut)
vs
 8ct Topaz (cushion cut)
blue
 
blue
11.07×11.07 mm 11.54×11.54 mm
actual size
Actual size of 8ct Sapphire (cushion cut, 11.07×11.07mm, Blue color)   Actual size of 8ct Topaz (cushion cut, 11.54×11.54mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 8ct Sapphire (cushion cut, 11.07×11.07mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 8ct Topaz (cushion cut, 11.54×11.54mm) 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
 66% vs 69%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 8ct Sapphire Cushion (11.07×11.07mm, Blue) and 8ct Topaz Cushion (11.54×11.54mm, 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.


8 Ct Sapphire (Cushion) 8 Ct Topaz (Cushion)
11.07×11.07 mm vs 11.54×11.54 mm
110.29 mm²   119.85 mm²
Face-up size outline for 8ct Topaz (11.54×11.54mm, cushion cut)
Face-up size outline for 8ct Sapphire (11.07×11.07mm, cushion cut)
8ct Sapphire Cushion (11.07×11.07mm)
8ct Topaz Cushion (11.54×11.54mm)
Difference: 9% (9.56 mm²)
8ct Topaz (Cushion, 11.54×11.54mm) has approx. 9% more face-up area than 8ct Sapphire (Cushion, 11.07×11.07mm).


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