Choose Your Ring & Diamond Size

The Measure of Perfection

I. Find Your Perfect Ring Size

Measuring your true ring size is an art of precision, not a calculation. At ECLAVON, each piece is meticulously crafted to align with your natural rhythm — a perfect equilibrium between comfort and elegance.

1.1 Measure Your Ring Size at Home (The Simple Way)

  • Use a soft measuring tape or a thin strip of paper.
  • Wrap it gently around the base of your finger.
  • Mark the meeting point and measure the length in millimeters.
  • Compare with the ECLAVON Ring Size Conversion Table below.

A quick way to measure at home before you order

1.2 Check Your Ring Size

If you’re between two sizes, go for the slightly larger one.

ECLAVON Ring Size Conversion Table

Ring Diameter (mm) US Size UK Size EU Size Japan
14.0 mm 3 F 44 4
14.4 mm 3½ G 45¼ 5½
14.8 mm 4 H½ 46½ 7
15.2 mm 4½ I½ 47¾ 8
15.6 mm 5 J½ 49 9
16.0 mm 5½ L 50¾ 10½
16.5 mm 6 M 51½ 12
16.9 mm 6½ N 52¾ 13
17.3 mm 7 O 54 14
17.7 mm 7½ P 55¼ 15
18.2 mm 8 Q 56¾ 16
18.6 mm 8½ Q½ 58 17
19.0 mm 9 R½ 59¼ 18
19.4 mm 9½ S½ 60¾ 19
19.8 mm 10 T½ 61¾ 20
20.2 mm 10½ U½ 62¾ 20½
20.6 mm 11 V½ 64¼ 21
21.0 mm 11½ W½ 66 22
21.4 mm 12 Y 67¼ 23
21.8 mm 12½ Z 68 26
22.2 mm 13 Z + 1 69 27
22.6 mm 13½ Z + 1.5 71 31

II. Round Diamond Size Chart

Want to know the actual size of a 1 carat diamond on a hand? Use our diamond size chart to understand the millimeter (mm) size of each diamond shape.

Carat Weight Size (mm) Description

*Measurements are representative of ideal cuts. Actual dimensions may vary slightly by shape and setting.

III. Choose Your Ring

Each diamond is individually certified by GIA or IGI, then re-inspected in our atelier to ensure symmetry, light dispersion, and purity. Every facet is a declaration — quiet yet unmistakable.