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9ct Topaz (Trillion, 15.24×15.24mm, Bluish Green) vs 9ct Sapphire (Trillion, 14.62×14.62mm, Bluish Green)


Quick summary: When looked from above (face-up position), 9ct Topaz (15.24×15.24mm, trillion cut) appears 9% larger than 9ct Sapphire (14.62×14.62mm, trillion cut). See below how they compare side-by-side on a ring and finger.

9ct Topaz (trillion cut)
vs
 9ct Sapphire (trillion cut)
bluish green
 
bluish green
15.24×15.24 mm 14.62×14.62 mm
actual size
Actual size of 9ct Topaz (trillion cut, 15.24×15.24mm, Bluish Green color)   Actual size of 9ct Sapphire (trillion cut, 14.62×14.62mm, Bluish Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Bluish Green 9ct Topaz (trillion cut, 15.24×15.24mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 9ct Sapphire (trillion cut, 14.62×14.62mm) 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 87%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 9ct Topaz Trillion (15.24×15.24mm, Bluish Green) and 9ct Sapphire Trillion (14.62×14.62mm, Bluish Green) 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.


9 Ct Topaz (Trillion) 9 Ct Sapphire (Trillion)
15.24×15.24 mm vs 14.62×14.62 mm
144 mm²   132.52 mm²
Face-up size outline for 9ct Topaz (15.24×15.24mm, trillion cut)
Face-up size outline for 9ct Sapphire (14.62×14.62mm, trillion cut)
9ct Topaz Trillion (15.24×15.24mm)
9ct Sapphire Trillion (14.62×14.62mm)
Difference: 9% (11.48 mm²)
9ct Topaz (Trillion, 15.24×15.24mm) has approx. 9% more face-up area than 9ct Sapphire (Trillion, 14.62×14.62mm).


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