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20ct Topaz (Baguette, 19.61×13.07mm, Blue) vs 20ct Sapphire (Baguette, 18.81×12.54mm, Blue)


Quick summary: When looked from above (face-up position), 20ct Topaz (19.61×13.07mm, baguette cut) appears 9% larger than 20ct Sapphire (18.81×12.54mm, baguette cut). See below how they compare side-by-side on a ring and finger.

20ct Topaz (baguette cut)
vs
 20ct Sapphire (baguette cut)
blue
 
blue
19.61×13.07 mm 18.81×12.54 mm
actual size
Actual size of 20ct Topaz (baguette cut, 19.61×13.07mm, Blue color)   Actual size of 20ct Sapphire (baguette cut, 18.81×12.54mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 20ct Topaz (baguette cut, 19.61×13.07mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 20ct Sapphire (baguette cut, 18.81×12.54mm) 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
 78% vs 75%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 20ct Topaz Baguette (19.61×13.07mm, Blue) and 20ct Sapphire Baguette (18.81×12.54mm, 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.


20 Ct Topaz (Baguette) 20 Ct Sapphire (Baguette)
19.61×13.07 mm vs 18.81×12.54 mm
256.3 mm²   235.88 mm²
Face-up size outline for 20ct Topaz (19.61×13.07mm, baguette cut)
Face-up size outline for 20ct Sapphire (18.81×12.54mm, baguette cut)
20ct Topaz Baguette (19.61×13.07mm)
20ct Sapphire Baguette (18.81×12.54mm)
Difference: 9% (20.42 mm²)
20ct Topaz (Baguette, 19.61×13.07mm) has approx. 9% more face-up area than 20ct Sapphire (Baguette, 18.81×12.54mm).


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