How big are 0.75 carat diamond stud earrings?

By HeyGema™ · Updated

In short

0.75 carat diamond stud earrings (ctw) are two stones of 0.375 carat. A round stone of 0.375 carat is about 4.7 mm across, a princess 4.0 x 4.0 mm and a cushion 4.0 x 4.0 mm.

Carat to mm calculator

About 4.7 x 4.7 mm

An estimate for a well-cut stone. A deep or shallow cut faces up smaller or bigger.

Round
4.7 mm
Princess
4.0 x 4.0 mm
Cushion
4.0 x 4.0 mm
Oval
5.8 x 4.0 mm
Pear
6.1 x 4.0 mm
Heart
4.7 x 4.7 mm
= 2 mm in every picture above
One stone of a 0.75 ctw pair (0.375 carat each) in six stud shapes, to the same scale.

0.75 carat total weight stud earrings in mm

A pair of 0.75 ctw diamond studs has two stones of 0.375 carat each. A round stone of that weight measures about 4.7 mm (0.18 in) across the face. Each weighs 0.075 grams.

Round
Size of each stone: 4.7 mm
In inches: 0.18 in
Princess
Size of each stone: 4.0 x 4.0 mm
In inches: 0.16 x 0.16 in
Cushion
Size of each stone: 4.0 x 4.0 mm
In inches: 0.16 x 0.16 in
Oval
Size of each stone: 5.8 x 4.0 mm
In inches: 0.23 x 0.16 in
Pear
Size of each stone: 6.1 x 4.0 mm
In inches: 0.24 x 0.16 in
Heart
Size of each stone: 4.7 x 4.7 mm
In inches: 0.18 x 0.18 in

0.75 ctw studs next to a coin

0.375 ct diamond
4.7 mm
US dime
17.9 mm
US nickel
21.2 mm
US quarter
24.3 mm
One 0.375 carat round stone is 4.7 mm wide.

Nearby stud sizes

0.5 ctw
Each stone: 0.25 ct
Round size: 4.1 mm
0.75 ctw (this page)
Each stone: 0.375 ct
Round size: 4.7 mm
1 ctw
Each stone: 0.5 ct
Round size: 5.1 mm

How to compare studs from different sellers

Ask for the size in mm of each stone along with the total weight. Two pairs of the same ctw can differ by a few tenths of a millimeter because of the cut. See the stud earring size chart for every weight, or how to measure a diamond you already own.

Questions

Each round stone of a 0.75 ctw pair is about 4.7 mm across (0.18 in).
Two. ctw is the combined weight of the pair, so each stone is 0.375 carat.
Each stone is 4.7 mm across, 26% of the width of a US dime (17.91 mm). Round 0.375 carat stones are the same size whether they sit in a ring or an earring.
0.375 carat each.

More size charts