How big is a 10 carat topaz?
By HeyGema™ · Updated
In short
A 10 carat round topaz measures about 13.9 mm across (0.55 inches), about the same width as a diamond of the same weight. An oval of the same weight is 17.2 x 11.8 mm and an emerald cut 15.1 x 10.8 mm.
- 13.9 mmround topaz, across
- 0.55 inthe same in inches
- 2.00 gweight
- 84%of a size 6 finger's width
Carat to mm calculator
About 13.9 x 13.9 mm
An estimate for a well-cut stone. A deep or shallow cut faces up smaller or bigger.
Round
13.9 mm
Oval
17.2 x 11.8 mm
Cushion
12.1 x 12.1 mm
Princess
11.8 x 11.8 mm
Emerald cut
15.1 x 10.8 mm
Asscher
11.8 x 11.8 mm
Radiant
14.0 x 10.8 mm
Pear
18.3 x 11.8 mm
Marquise
22.4 x 11.2 mm
Heart
14.0 x 14.0 mm
Trillion
15.1 x 15.1 mm
Baguette
17.2 x 8.6 mm
= 5 mm in every picture above
10 carat topaz size by shape
Face-up measurements of a well-cut 10 carat topaz. Topaz has about the same density as diamond (3.53 against 3.52), so the same weight gives the same size.
- Round
- Length x width: 13.9 mm
- In inches: 0.55 in
- Oval
- Length x width: 17.2 x 11.8 mm
- In inches: 0.68 x 0.47 in
- Cushion
- Length x width: 12.1 x 12.1 mm
- In inches: 0.47 x 0.47 in
- Princess
- Length x width: 11.8 x 11.8 mm
- In inches: 0.47 x 0.47 in
- Emerald cut
- Length x width: 15.1 x 10.8 mm
- In inches: 0.59 x 0.42 in
- Asscher
- Length x width: 11.8 x 11.8 mm
- In inches: 0.47 x 0.47 in
- Radiant
- Length x width: 14.0 x 10.8 mm
- In inches: 0.55 x 0.42 in
- Pear
- Length x width: 18.3 x 11.8 mm
- In inches: 0.72 x 0.47 in
- Marquise
- Length x width: 22.4 x 11.2 mm
- In inches: 0.88 x 0.44 in
- Heart
- Length x width: 14.0 x 14.0 mm
- In inches: 0.55 x 0.55 in
- Trillion
- Length x width: 15.1 x 15.1 mm
- In inches: 0.59 x 0.59 in
- Baguette
- Length x width: 17.2 x 8.6 mm
- In inches: 0.68 x 0.34 in
10 carat topaz against other gems
- Diamond
- Round, 10 carat: 13.9 mm
- Moissanite
- Round, 10 carat: 14.3 mm
- Sapphire
- Round, 10 carat: 13.3 mm
- Ruby
- Round, 10 carat: 13.3 mm
- Emerald
- Round, 10 carat: 15.1 mm
- Aquamarine
- Round, 10 carat: 15.2 mm
- Morganite
- Round, 10 carat: 15.0 mm
- Tanzanite
- Round, 10 carat: 14.1 mm
- Topaz (this page)
- Round, 10 carat: 13.9 mm
10 carat topaz on a finger
- 4
- Finger width: 14.9 mm
- Round covers: 93%
- Oval covers: 80%
- 5
- Finger width: 15.7 mm
- Round covers: 88%
- Oval covers: 75%
- 6
- Finger width: 16.5 mm
- Round covers: 84%
- Oval covers: 72%
- 7
- Finger width: 17.3 mm
- Round covers: 80%
- Oval covers: 68%
- 8
- Finger width: 18.1 mm
- Round covers: 77%
- Oval covers: 65%
- 9
- Finger width: 18.9 mm
- Round covers: 73%
- Oval covers: 62%
Topaz at nearby weights
- 5 carat topaz
- Round diameter: 11.0 mm
- 10 ct (this page)
- Round diameter: 13.9 mm
Questions
A round 10 carat topaz is about 13.9 mm across. Other shapes are longer than they are wide: an oval is 17.2 x 11.8 mm.
About the same. A round 10 carat topaz is about the same width as a diamond of the same weight.
2.00 grams. A carat is 200 milligrams for every gem.
A round 10 carat topaz covers 84% of the width of a size 6 finger. Compare it with a ring you have tried on in the finger chart above.