Size Guide

Fine jewelry should feel like a natural extension of your own hand. Because we curate archival pieces from across the globe, we provide an international index of measurement to help you find your perfect fit. 

I. The International Index

We use the French standard as our primary reference, which corresponds to the inner circumference of the ring in millimeters.

Ø (mm) France (EU) Italy UK / AU US / CAN
15.3 mm 48 8 I 1/2 4 1/2
15.7 mm 49 9 J 1/2 5
16.0 mm 50 10 K 5 1/4
16.2 mm 51 11 L 5 3/4
16.5 mm 52 12 L 1/2 6
16.9 mm 53 13 M 1/2 6 1/2
17.3 mm 54 14 N 1/2 7
17.7 mm 56 16 O 1/2 7 1/2
18.1 mm 57 17 P 1/2 8
18.5 mm 58 18 Q 1/2 8 1/2
18.9 mm 59 19 R 1/2 9
19.4 mm 61 21 S 1/2 9 1/2
19.8 mm 62 22 T 1/2 10

 

II. Considerations of Form

01. The most accurate method is to measure the internal diameter (in millimeters) of a ring you already wear and love. Ensure you measure the specific finger where you intend to wear your new find; the dominant hand is often slightly larger than the non-dominant.

02. Jewelry often features substantial bands with significant "gravity" (width). Wider bands—common in 19th-century gold or mid-century sculptural designs—displace more area on the finger and will feel tighter than a thin wire band. If a piece is exceptionally wide, we recommend choosing a half-size larger for comfort.

03. Your hand’s volume is not static. Temperature, activity, and time of day all cause subtle changes. For the most consistent result, measure in neutral conditions, ideally in the mid-afternoon.

III. Personalized Service

Because every find in the archive is an edition of one, we offer tailored resizing for most pieces to ensure a perfect structural alignment.