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1.5ct Tourmaline (Round, 7.45×7.45mm, Light Red) vs 11.5ct Sapphire (Round, 13.49×13.49mm, Light Blue)


Quick summary: When looked from above (face-up position), 11.5ct Sapphire (13.49×13.49mm, round cut) appears 3.3 times larger than 1.5ct Tourmaline (7.45×7.45mm, round cut). See below how they compare side-by-side on a ring and finger.

1.5ct Tourmaline (round cut)
vs
 11.5ct Sapphire (round cut)
light red
 
light blue
7.45×7.45 mm 13.49×13.49 mm
actual size
Actual size of 1.5ct Tourmaline (round cut, 7.45×7.45mm, Light Red color)   Actual size of 11.5ct Sapphire (round cut, 13.49×13.49mm, Light Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Red 1.5ct Tourmaline (round cut, 7.45×7.45mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Blue 11.5ct Sapphire (round cut, 13.49×13.49mm) 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
 45% vs 80%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.5ct Tourmaline Round (7.45×7.45mm, Light Red) and 11.5ct Sapphire Round (13.49×13.49mm, Light 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, Sapphire will face-up smaller than Tourmaline for a given carat weight, because it has higher specific gravity (4 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.


1.5 Ct Tourmaline (Round) 11.5 Ct Sapphire (Round)
7.45×7.45 mm vs 13.49×13.49 mm
43.59 mm²   142.93 mm²
Face-up size outline for 11.5ct Sapphire (13.49×13.49mm, round cut)
Face-up size outline for 1.5ct Tourmaline (7.45×7.45mm, round cut)
1.5ct Tourmaline Round (7.45×7.45mm)
11.5ct Sapphire Round (13.49×13.49mm)
Difference: 228% (99.34 mm²)
11.5ct Sapphire (Round, 13.49×13.49mm) has approx. 228% more face-up area than 1.5ct Tourmaline (Round, 7.45×7.45mm). In other words, it's 3.28x larger.


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