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2.55ct Tanzanite (Round, 8.71×8.71mm, Blue) vs 1.7ct Tanzanite (Round, 7.61×7.61mm, Blue)


Quick summary: When looked from above (face-up position), 2.55ct Tanzanite (8.71×8.71mm, round cut) appears 31% larger than 1.7ct Tanzanite (7.61×7.61mm, round cut). See below how they compare side-by-side on a ring and finger.

2.55ct Tanzanite (round cut)
vs
 1.7ct Tanzanite (round cut)
blue
 
blue
8.71×8.71 mm 7.61×7.61 mm
actual size
Actual size of 2.55ct Tanzanite (round cut, 8.71×8.71mm, Blue color)   Actual size of 1.7ct Tanzanite (round cut, 7.61×7.61mm, Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 2.55ct Tanzanite (round cut, 8.71×8.71mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 1.7ct Tanzanite (round cut, 7.61×7.61mm) 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
 52% vs 46%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 2.55ct Tanzanite Round (8.71×8.71mm, Blue) and 1.7ct Tanzanite Round (7.61×7.61mm, 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

The face-up size depends on the shape of the gem, its weight and 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.


2.55 Ct Tanzanite (Round) 1.7 Ct Tanzanite (Round)
8.71×8.71 mm vs 7.61×7.61 mm
59.58 mm²   45.48 mm²
Face-up size outline for 2.55ct Tanzanite (8.71×8.71mm, round cut)
Face-up size outline for 1.7ct Tanzanite (7.61×7.61mm, round cut)
2.55ct Tanzanite Round (8.71×8.71mm)
1.7ct Tanzanite Round (7.61×7.61mm)
Difference: 31% (14.1 mm²)
2.55ct Tanzanite (Round, 8.71×8.71mm) has approx. 31% more face-up area than 1.7ct Tanzanite (Round, 7.61×7.61mm).


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