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6ct Topaz (Oval, 14.33×9.55mm, Blue) vs 1.34ct Sapphire (Trillion, 7.75×7.75mm, Dark Blue)


Quick summary: When looked from above (face-up position), 6ct Topaz (14.33×9.55mm, oval cut) appears 3 times larger than 1.34ct Sapphire (7.75×7.75mm, trillion cut). See below how they compare side-by-side on a ring and finger.

6ct Topaz (oval cut)
vs
 1.34ct Sapphire (trillion cut)
blue
 
dark blue
14.33×9.55 mm 7.75×7.75 mm
actual size
Actual size of 6ct Topaz (oval cut, 14.33×9.55mm, Blue color)   Actual size of 1.34ct Sapphire (trillion cut, 7.75×7.75mm, Dark Blue color)
 
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Left finger image
Ring on left finger
Blue 6ct Topaz (oval cut, 14.33×9.55mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Dark Blue 1.34ct Sapphire (trillion cut, 7.75×7.75mm) on a right ring and finger
Your settings
Ring
 Gold
Skin tone
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Ring diameter
 16.9 mm
Ring width
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Finger length
 64 mm
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Ring diameter: 16.9 mm
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Actual sizes of 6ct Topaz Oval (14.33×9.55mm, Blue) and 1.34ct Sapphire Trillion (7.75×7.75mm, Dark 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 Topaz (Oval) 1.34 Ct Sapphire (Trillion)
14.33×9.55 mm vs 7.75×7.75 mm
112.22 mm²   37.24 mm²
Face-up size outline for 6ct Topaz (14.33×9.55mm, oval cut)
Face-up size outline for 1.34ct Sapphire (7.75×7.75mm, trillion cut)
6ct Topaz Oval (14.33×9.55mm)
1.34ct Sapphire Trillion (7.75×7.75mm)
Difference: 201% (74.98 mm²)
6ct Topaz Oval (14.33×9.55mm) has approx. 201% more face-up area than 1.34ct Sapphire Trillion (7.75×7.75mm). In other words, it's 3.01x larger.


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