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1.75ct Kyanite (Marquise, 12.04×6.02mm, Blue) vs 1.75ct Topaz (Marquise, 12.22×6.11mm, Blue)


Quick summary: When looked from above (face-up position), 1.75ct Topaz (12.22×6.11mm, marquise cut) appears 3% larger than 1.75ct Kyanite (12.04×6.02mm, marquise cut). See below how they compare side-by-side on a ring and finger.

1.75ct Kyanite (marquise cut)
vs
 1.75ct Topaz (marquise cut)
blue
 
blue
12.04×6.02 mm 12.22×6.11 mm
actual size
Actual size of 1.75ct Kyanite (marquise cut, 12.04×6.02mm, Blue color)   Actual size of 1.75ct Topaz (marquise cut, 12.22×6.11mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 1.75ct Kyanite (marquise cut, 12.04×6.02mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 1.75ct Topaz (marquise cut, 12.22×6.11mm) 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
 36% vs 37%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.75ct Kyanite Marquise (12.04×6.02mm, Blue) and 1.75ct Topaz Marquise (12.22×6.11mm, 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, Kyanite will face-up smaller than Topaz for a given carat weight, because it has higher specific gravity (3.68 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.


1.75 Ct Kyanite (Marquise) 1.75 Ct Topaz (Marquise)
12.04×6.02 mm vs 12.22×6.11 mm
51.46 mm²   53.01 mm²
Face-up size outline for 1.75ct Topaz (12.22×6.11mm, marquise cut)
Face-up size outline for 1.75ct Kyanite (12.04×6.02mm, marquise cut)
1.75ct Kyanite Marquise (12.04×6.02mm)
1.75ct Topaz Marquise (12.22×6.11mm)
Difference: 3% (1.55 mm²)
1.75ct Topaz (Marquise, 12.22×6.11mm) has approx. 3% more face-up area than 1.75ct Kyanite (Marquise, 12.04×6.02mm).


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