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7.5ct Zircon (Cabochon, 12.69×8.46mm, Orange) vs 7.5ct Sunstone (Cabochon, 15.36×10.24mm, Orangey Red)


Quick summary: When looked from above (face-up position), 7.5ct Sunstone (15.36×10.24mm, cabochon cut) appears 47% larger than 7.5ct Zircon (12.69×8.46mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

7.5ct Zircon (cabochon cut)
vs
7.5ct Sunstone (cabochon cut)
orange
 
orangey red
12.69×8.46 mm 15.36×10.24 mm
actual size
Actual size of 7.5ct Zircon (cabochon cut, 12.69×8.46mm, Orange color)   Actual size of 7.5ct Sunstone (cabochon cut, 15.36×10.24mm, Orangey Red color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Orange 7.5ct Zircon (cabochon cut, 12.69×8.46mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orangey Red 7.5ct Sunstone (cabochon cut, 15.36×10.24mm) 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
51% vs 61%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 7.5ct Zircon Cabochon (12.69×8.46mm, Orange) and 7.5ct Sunstone Cabochon (15.36×10.24mm, Orangey Red) 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 Sunstone for a given carat weight, because it has higher specific gravity (4.7 vs. 2.65 - this means it's "heavier" compared to Sunstone 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.


7.5 Ct Zircon (Cabochon) 7.5 Ct Sunstone (Cabochon)
12.69×8.46 mm vs 15.36×10.24 mm
88.03 mm²   128.97 mm²
Face-up size outline for 7.5ct Sunstone (15.36×10.24mm, cabochon cut)
Face-up size outline for 7.5ct Zircon (12.69×8.46mm, cabochon cut)
7.5ct Zircon Cabochon (12.69×8.46mm)
7.5ct Sunstone Cabochon (15.36×10.24mm)
Difference: 47% (40.94 mm²)
7.5ct Sunstone (Cabochon, 15.36×10.24mm) has approx. 47% more face-up area than 7.5ct Zircon (Cabochon, 12.69×8.46mm).


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