How big is a 5 carat alexandrite?
By HeyGema™ · Updated
In short
A 5 carat round alexandrite measures about 10.8 mm across (0.43 inches), 2% narrower than a 5 carat diamond (11.0 mm). An oval of the same weight is 13.4 x 9.2 mm and an emerald cut 11.7 x 8.4 mm.
- 10.8 mmround alexandrite, across
- 0.43 inthe same in inches
- 1.00 gweight
- 66%of a size 6 finger's width
Carat to mm calculator
About 10.8 x 10.8 mm
An estimate for a well-cut stone. A deep or shallow cut faces up smaller or bigger.
Round
10.8 mm
Oval
13.4 x 9.2 mm
Cushion
9.4 x 9.4 mm
Princess
9.2 x 9.2 mm
Emerald cut
11.7 x 8.4 mm
Asscher
9.2 x 9.2 mm
Radiant
10.9 x 8.4 mm
Pear
14.3 x 9.2 mm
Marquise
17.4 x 8.7 mm
Heart
10.9 x 10.9 mm
Trillion
11.7 x 11.7 mm
Baguette
13.4 x 6.7 mm
= 5 mm in every picture above
5 carat alexandrite size by shape
Face-up measurements of a well-cut 5 carat alexandrite. Alexandrite is denser than diamond (3.73 against 3.52), so it packs more weight into less space and faces up 2% narrower for the same weight.
- Round
- Length x width: 10.8 mm
- In inches: 0.43 in
- Oval
- Length x width: 13.4 x 9.2 mm
- In inches: 0.53 x 0.36 in
- Cushion
- Length x width: 9.4 x 9.4 mm
- In inches: 0.37 x 0.37 in
- Princess
- Length x width: 9.2 x 9.2 mm
- In inches: 0.36 x 0.36 in
- Emerald cut
- Length x width: 11.7 x 8.4 mm
- In inches: 0.46 x 0.33 in
- Asscher
- Length x width: 9.2 x 9.2 mm
- In inches: 0.36 x 0.36 in
- Radiant
- Length x width: 10.9 x 8.4 mm
- In inches: 0.43 x 0.33 in
- Pear
- Length x width: 14.3 x 9.2 mm
- In inches: 0.56 x 0.36 in
- Marquise
- Length x width: 17.4 x 8.7 mm
- In inches: 0.69 x 0.34 in
- Heart
- Length x width: 10.9 x 10.9 mm
- In inches: 0.43 x 0.43 in
- Trillion
- Length x width: 11.7 x 11.7 mm
- In inches: 0.46 x 0.46 in
- Baguette
- Length x width: 13.4 x 6.7 mm
- In inches: 0.53 x 0.26 in
5 carat alexandrite against other gems
- Diamond
- Round, 5 carat: 11.0 mm
- Moissanite
- Round, 5 carat: 11.4 mm
- Sapphire
- Round, 5 carat: 10.6 mm
- Ruby
- Round, 5 carat: 10.6 mm
- Emerald
- Round, 5 carat: 12.0 mm
- Aquamarine
- Round, 5 carat: 12.0 mm
- Morganite
- Round, 5 carat: 11.9 mm
- Tanzanite
- Round, 5 carat: 11.2 mm
- Alexandrite (this page)
- Round, 5 carat: 10.8 mm
5 carat alexandrite on a finger
- 4
- Finger width: 14.9 mm
- Round covers: 73%
- Oval covers: 62%
- 5
- Finger width: 15.7 mm
- Round covers: 69%
- Oval covers: 59%
- 6
- Finger width: 16.5 mm
- Round covers: 66%
- Oval covers: 56%
- 7
- Finger width: 17.3 mm
- Round covers: 62%
- Oval covers: 53%
- 8
- Finger width: 18.1 mm
- Round covers: 60%
- Oval covers: 51%
- 9
- Finger width: 18.9 mm
- Round covers: 57%
- Oval covers: 49%
Alexandrite at nearby weights
- 4 carat alexandrite
- Round diameter: 10.0 mm
- 5 ct (this page)
- Round diameter: 10.8 mm
- 10 carat alexandrite
- Round diameter: 13.6 mm
Questions
A round 5 carat alexandrite is about 10.8 mm across. Other shapes are longer than they are wide: an oval is 13.4 x 9.2 mm.
No. A round 5 carat alexandrite is 2% narrower than a 5 carat diamond (11.0 mm).
1.00 grams. A carat is 200 milligrams for every gem.
A round 5 carat alexandrite covers 66% of the width of a size 6 finger. Compare it with a ring you have tried on in the finger chart above.