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6.5ct Sapphire (Round, 11.16×11.16mm, Blue) vs 6.5ct Topaz (Round, 11.63×11.63mm, Blue)


Quick summary: When looked from above (face-up position), 6.5ct Topaz (11.63×11.63mm, round cut) appears 9% larger than 6.5ct Sapphire (11.16×11.16mm, round cut). See below how they compare side-by-side on a ring and finger.

6.5ct Sapphire (round cut)
vs
 6.5ct Topaz (round cut)
blue
 
blue
11.16×11.16 mm 11.63×11.63 mm
actual size
Actual size of 6.5ct Sapphire (round cut, 11.16×11.16mm, Blue color)   Actual size of 6.5ct Topaz (round cut, 11.63×11.63mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 6.5ct Sapphire (round cut, 11.16×11.16mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 6.5ct Topaz (round cut, 11.63×11.63mm) 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
 67% vs 69%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 6.5ct Sapphire Round (11.16×11.16mm, Blue) and 6.5ct Topaz Round (11.63×11.63mm, 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.


6.5 Ct Sapphire (Round) 6.5 Ct Topaz (Round)
11.16×11.16 mm vs 11.63×11.63 mm
97.82 mm²   106.23 mm²
Face-up size outline for 6.5ct Topaz (11.63×11.63mm, round cut)
Face-up size outline for 6.5ct Sapphire (11.16×11.16mm, round cut)
6.5ct Sapphire Round (11.16×11.16mm)
6.5ct Topaz Round (11.63×11.63mm)
Difference: 9% (8.41 mm²)
6.5ct Topaz (Round, 11.63×11.63mm) has approx. 9% more face-up area than 6.5ct Sapphire (Round, 11.16×11.16mm).


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