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2.5ct Tanzanite (Round, 8.65×8.65mm, Blue) vs 1.25ct Tanzanite (Round, 6.87×6.87mm, Blue)


Quick summary: When looked from above (face-up position), 2.5ct Tanzanite (8.65×8.65mm, round cut) appears 59% larger than 1.25ct Tanzanite (6.87×6.87mm, round cut). See below how they compare side-by-side on a ring and finger.

2.5ct Tanzanite (round cut)
vs
 1.25ct Tanzanite (round cut)
blue
 
blue
8.65×8.65 mm 6.87×6.87 mm
actual size
Actual size of 2.5ct Tanzanite (round cut, 8.65×8.65mm, Blue color)   Actual size of 1.25ct Tanzanite (round cut, 6.87×6.87mm, Blue color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 2.5ct Tanzanite (round cut, 8.65×8.65mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 1.25ct Tanzanite (round cut, 6.87×6.87mm) 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 41%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 2.5ct Tanzanite Round (8.65×8.65mm, Blue) and 1.25ct Tanzanite Round (6.87×6.87mm, 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.


2.5 Ct Tanzanite (Round) 1.25 Ct Tanzanite (Round)
8.65×8.65 mm vs 6.87×6.87 mm
58.77 mm²   37.07 mm²
Face-up size outline for 2.5ct Tanzanite (8.65×8.65mm, round cut)
Face-up size outline for 1.25ct Tanzanite (6.87×6.87mm, round cut)
2.5ct Tanzanite Round (8.65×8.65mm)
1.25ct Tanzanite Round (6.87×6.87mm)
Difference: 59% (21.7 mm²)
2.5ct Tanzanite (Round, 8.65×8.65mm) has approx. 59% more face-up area than 1.25ct Tanzanite (Round, 6.87×6.87mm).


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