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1ct Tourmaline (Round, 6.51×6.51mm, Violet) vs 1ct Zircon (Round, 5.69×5.69mm, Orange)


Quick summary: When looked from above (face-up position), 1ct Tourmaline (6.51×6.51mm, round cut) appears 31% larger than 1ct Zircon (5.69×5.69mm, round cut). See below how they compare side-by-side on a ring and finger.

1ct Tourmaline (round cut)
vs
 1ct Zircon (round cut)
violet
 
orange
6.51×6.51 mm 5.69×5.69 mm
actual size
Actual size of 1ct Tourmaline (round cut, 6.51×6.51mm, Violet color)   Actual size of 1ct Zircon (round cut, 5.69×5.69mm, Orange color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 1ct Tourmaline (round cut, 6.51×6.51mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orange 1ct Zircon (round cut, 5.69×5.69mm) 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 34%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1ct Tourmaline Round (6.51×6.51mm, Violet) and 1ct Zircon Round (5.69×5.69mm, Orange) 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 Tourmaline for a given carat weight, because it has higher specific gravity (4.7 vs. 3.06 - this means it's "heavier" compared to Tourmaline 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 Ct Tourmaline (Round) 1 Ct Zircon (Round)
6.51×6.51 mm vs 5.69×5.69 mm
33.29 mm²   25.43 mm²
Face-up size outline for 1ct Tourmaline (6.51×6.51mm, round cut)
Face-up size outline for 1ct Zircon (5.69×5.69mm, round cut)
1ct Tourmaline Round (6.51×6.51mm)
1ct Zircon Round (5.69×5.69mm)
Difference: 31% (7.86 mm²)
1ct Tourmaline (Round, 6.51×6.51mm) has approx. 31% more face-up area than 1ct Zircon (Round, 5.69×5.69mm).


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