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1.8ct Sapphire (Marquise, 12×6mm, White) vs 2ct Zircon (Marquise, 11.82×5.91mm, White)


Quick summary: When looked from above (face-up position), 1.8ct Sapphire (12×6mm, marquise cut) appears 3% larger than 2ct Zircon (11.82×5.91mm, marquise cut). See below how they compare side-by-side on a ring and finger.

1.8ct Sapphire (marquise cut)
vs
 2ct Zircon (marquise cut)
white
 
white
12×6 mm 11.82×5.91 mm
actual size
Actual size of 1.8ct Sapphire (marquise cut, 12×6mm, White color)   Actual size of 2ct Zircon (marquise cut, 11.82×5.91mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 1.8ct Sapphire (marquise cut, 12×6mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 2ct Zircon (marquise cut, 11.82×5.91mm) 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 35%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1.8ct Sapphire Marquise (12×6mm, White) and 2ct Zircon Marquise (11.82×5.91mm, White) 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, Zircon will face-up smaller than Sapphire for a given carat weight, because it has higher specific gravity (4.7 vs. 4 - this means it's "heavier" compared to Sapphire 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.


1.8 Ct Sapphire (Marquise) 2 Ct Zircon (Marquise)
12×6 mm vs 11.82×5.91 mm
51.12 mm²   49.6 mm²
Face-up size outline for 1.8ct Sapphire (12×6mm, marquise cut)
Face-up size outline for 2ct Zircon (11.82×5.91mm, marquise cut)
1.8ct Sapphire Marquise (12×6mm)
2ct Zircon Marquise (11.82×5.91mm)
Difference: 3% (1.52 mm²)
1.8ct Sapphire (Marquise, 12×6mm) has approx. 3% more face-up area than 2ct Zircon (Marquise, 11.82×5.91mm).


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