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15ct Titanite (Cabochon, 17.6×11.73mm, Yellowish Green) vs 15ct Apatite (Cabochon, 18.18×12.12mm, Green)


Quick summary: When looked from above (face-up position), 15ct Apatite (18.18×12.12mm, cabochon cut) appears 7% larger than 15ct Titanite (17.6×11.73mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

15ct Titanite (cabochon cut)
vs
15ct Apatite (cabochon cut)
yellowish green
 
green
17.6×11.73 mm 18.18×12.12 mm
actual size
Actual size of 15ct Titanite (cabochon cut, 17.6×11.73mm, Yellowish Green color)   Actual size of 15ct Apatite (cabochon cut, 18.18×12.12mm, Green color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Yellowish Green 15ct Titanite (cabochon cut, 17.6×11.73mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 15ct Apatite (cabochon cut, 18.18×12.12mm) 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
70% vs 72%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 15ct Titanite Cabochon (17.6×11.73mm, Yellowish Green) and 15ct Apatite Cabochon (18.18×12.12mm, Green) 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, Titanite will face-up smaller than Apatite for a given carat weight, because it has higher specific gravity (3.53 vs. 3.2 - this means it's "heavier" compared to Apatite 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.


15 Ct Titanite (Cabochon) 15 Ct Apatite (Cabochon)
17.6×11.73 mm vs 18.18×12.12 mm
169.29 mm²   180.68 mm²
Face-up size outline for 15ct Apatite (18.18×12.12mm, cabochon cut)
Face-up size outline for 15ct Titanite (17.6×11.73mm, cabochon cut)
15ct Titanite Cabochon (17.6×11.73mm)
15ct Apatite Cabochon (18.18×12.12mm)
Difference: 7% (11.39 mm²)
15ct Apatite (Cabochon, 18.18×12.12mm) has approx. 7% more face-up area than 15ct Titanite (Cabochon, 17.6×11.73mm).


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