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2ct Topaz (Pear, 10.91×6.57mm, Light Blue) vs 1.23ct Sapphire (Round, 6.1×6.1mm, Blue)


Quick summary: When looked from above (face-up position), 2ct Topaz (10.91×6.57mm, pear cut) appears 79% larger than 1.23ct Sapphire (6.1×6.1mm, round cut). See below how they compare side-by-side on a ring and finger.

2ct Topaz (pear cut)
vs
 1.23ct Sapphire (round cut)
light blue
 
blue
10.91×6.57 mm 6.1×6.1 mm
actual size
Actual size of 2ct Topaz (pear cut, 10.91×6.57mm, Light Blue color)   Actual size of 1.23ct Sapphire (round cut, 6.1×6.1mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Blue 2ct Topaz (pear cut, 10.91×6.57mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 1.23ct Sapphire (round cut, 6.1×6.1mm) 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
 39% vs 37%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 2ct Topaz Pear (10.91×6.57mm, Light Blue) and 1.23ct Sapphire Round (6.1×6.1mm, 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.


2 Ct Topaz (Pear) 1.23 Ct Sapphire (Round)
10.91×6.57 mm vs 6.1×6.1 mm
52.33 mm²   29.22 mm²
Face-up size outline for 2ct Topaz (10.91×6.57mm, pear cut)
Face-up size outline for 1.23ct Sapphire (6.1×6.1mm, round cut)
2ct Topaz Pear (10.91×6.57mm)
1.23ct Sapphire Round (6.1×6.1mm)
Difference: 79% (23.11 mm²)
2ct Topaz (Pear, 10.91×6.57mm) has approx. 79% more face-up area than 1.23ct Sapphire (Round, 6.1×6.1mm).


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