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1.5ct Tourmaline (Oval, 9.6×6.4mm, Purple) vs 1.5ct Topaz (Oval, 9.15×6.1mm, Blue)


Quick summary: When looked from above (face-up position), 1.5ct Tourmaline (9.6×6.4mm, oval cut) appears 10% larger than 1.5ct Topaz (9.15×6.1mm, oval cut). See below how they compare side-by-side on a ring and finger.

1.5ct Tourmaline (oval cut)
vs
 1.5ct Topaz (oval cut)
purple
 
blue
9.6×6.4 mm 9.15×6.1 mm
actual size
Actual size of 1.5ct Tourmaline (oval cut, 9.6×6.4mm, Purple color)   Actual size of 1.5ct Topaz (oval cut, 9.15×6.1mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Purple 1.5ct Tourmaline (oval cut, 9.6×6.4mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 1.5ct Topaz (oval cut, 9.15×6.1mm) 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
 38% vs 37%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.5ct Tourmaline Oval (9.6×6.4mm, Purple) and 1.5ct Topaz Oval (9.15×6.1mm, 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, Topaz will face-up smaller than Tourmaline for a given carat weight, because it has higher specific gravity (3.53 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 (Oval) 1.5 Ct Topaz (Oval)
9.6×6.4 mm vs 9.15×6.1 mm
50.38 mm²   45.77 mm²
Face-up size outline for 1.5ct Tourmaline (9.6×6.4mm, oval cut)
Face-up size outline for 1.5ct Topaz (9.15×6.1mm, oval cut)
1.5ct Tourmaline Oval (9.6×6.4mm)
1.5ct Topaz Oval (9.15×6.1mm)
Difference: 10% (4.61 mm²)
1.5ct Tourmaline (Oval, 9.6×6.4mm) has approx. 10% more face-up area than 1.5ct Topaz (Oval, 9.15×6.1mm).


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