×
carat vs. color  length*  width*
  ×

(or examine a )
* size in mm (optional)

1.45ct Diamond (Round, 7.36×7.36mm, White) vs 2.25ct Tourmaline (Cushion, 7.98×7.98mm, Violet)


Quick summary: When looked from above (face-up position), 2.25ct Tourmaline (7.98×7.98mm, cushion cut) appears 35% larger than 1.45ct Diamond (7.36×7.36mm, round cut). See below how they compare side-by-side on a ring and finger.

1.45ct Diamond (round cut)
vs
 2.25ct Tourmaline (cushion cut)
white
 
violet
7.36×7.36 mm 7.98×7.98 mm
actual size
Actual size of 1.45ct Diamond (round cut, 7.36×7.36mm, White color)   Actual size of 2.25ct Tourmaline (cushion cut, 7.98×7.98mm, Violet color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 1.45ct Diamond (round cut, 7.36×7.36mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Violet 2.25ct Tourmaline (cushion cut, 7.98×7.98mm) 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
 44% vs 48%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.45ct Diamond Round (7.36×7.36mm, White) and 2.25ct Tourmaline Cushion (7.98×7.98mm, Violet) 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, Diamond will face-up smaller than Tourmaline for a given carat weight, because it has higher specific gravity (3.52 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.


1.45 Ct Diamond (Round) 2.25 Ct Tourmaline (Cushion)
7.36×7.36 mm vs 7.98×7.98 mm
42.54 mm²   57.31 mm²
Face-up size outline for 2.25ct Tourmaline (7.98×7.98mm, cushion cut)
Face-up size outline for 1.45ct Diamond (7.36×7.36mm, round cut)
1.45ct Diamond Round (7.36×7.36mm)
2.25ct Tourmaline Cushion (7.98×7.98mm)
Difference: 35% (14.77 mm²)
2.25ct Tourmaline (Cushion, 7.98×7.98mm) has approx. 35% more face-up area than 1.45ct Diamond (Round, 7.36×7.36mm).


Popular comparisons: