Aino LUMIÈRE

Aino LUMIÈRE

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Size Guide

Precision Fit for Every Piece

Our size guides are crafted with the same precision as the pieces themselves. When in doubt, our client advisors are always available to assist.

01 · Ring Size

Measure the inner circumference or diameter of an existing ring, or wrap a strip of paper around your finger.

01

Existing Ring

Place your ring on a ruler and measure the inner diameter in millimetres.

02

Paper Strip

Wrap a 6mm strip of paper snugly around your finger, mark where it overlaps, and measure the length — that is your circumference.

03

Best Time

Measure in the evening when fingers are at their largest. Avoid cold or early morning measurements.

USEUUKCircumference (mm)Diameter (mm)
447H47.015.0
4.548I48.015.3
549J49.315.7
5.550K50.616.1
651L51.916.5
6.552M52.516.7
754N53.817.1
7.555O55.117.5
857P56.317.9
8.558Q57.618.3
959R58.918.8
9.560S60.219.2
1062T62.119.8

* Half sizes may vary slightly by style. Contact us for bespoke sizing.

Fixed Band Ring

A closed, rigid band with no adjustable gap. Sizing is permanent — refer to the table above and measure carefully before ordering. If between sizes, we recommend sizing up for comfort.

Open-Band Ring (Adjustable)

Features a gap in the band that allows manual adjustment. Most open rings are shipped in a standard S–M fit and can be gently widened to suit your finger.

01

Always adjust gradually — small increments only.

02

Widen from small toward larger; avoid repeated back-and-forth bending.

03

Use both thumbs on the inner band — never bend from one side only.

04

Stop adjusting once comfortable; over-bending weakens the metal at the gap.

Open-band rings are not suitable for fingers that require very large or very small sizes outside the standard adjustment range. If significant resizing is needed, please contact our client team before ordering.

02 · Bracelet Size

Bracelet fit depends on both your wrist circumference and the clasp type. Measure your wrist snugly, then add 1–2 cm for a comfortable drape.

Wrap a flexible tape measure or a strip of paper around your wrist just below the wrist bone. Note the circumference in centimetres, then add 1 cm for a snug fit or 2 cm for a relaxed drape.

Wrist (cm)SizeInner Diameter (cm)Fit
14–15XS16.0Slim / petite wrist
15–16S17.0Standard small
16–17M18.0Most common women's fit
17–18L19.0Standard large
18–19XL20.0Relaxed / men's petite
19–20XXL21.0Men's standard

Closed Loop · Sliding Clasp

A seamless bangle or a chain with a sliding adjuster knot. The inner circumference is fixed — size selection is critical. Always measure your wrist and choose the inner diameter that allows the bracelet to slide over your hand comfortably.

01

Measure at the widest part of your hand (knuckles) to ensure the bracelet can be put on.

02

For rigid bangles, the inner diameter must exceed your knuckle circumference ÷ π.

03

Sliding adjusters allow minor length changes — pull the cord ends gently to tighten.

Open Clasp — Lobster · Figure-8 · Toggle

Clasps that open and close allow precise on-wrist adjustment. The total chain length determines the size range. Many styles include 2–3 cm of extension chain for flexibility.

Lobster Clasp

Spring-loaded lever; secure and easy to operate one-handed. Most common on chain bracelets.

Figure-8 / Safety Clasp

Double-locking mechanism shaped like a figure-8. Provides extra security — favoured for heavier pieces.

Toggle Clasp

A bar slides through a ring to fasten. Decorative and easy to use; best for lighter-weight bracelets.

* If your wrist measurement falls between sizes, we recommend choosing the larger size for bracelets without extension chain.

02 · Necklace Length

Chain length is measured end-to-end. The right length depends on neckline, pendant size, and personal preference.

Choker38–41 cm
38cm

Sits on collarbone

Princess43–46 cm
43cm

Just below collarbone — most versatile

Matinee50–53 cm
50cm

At or just above bust

Opera58–61 cm
58cm

Below bust, above waist

Rope / Lariat71+ cm
71cm

Versatile; can be layered or knotted

StyleCMInches
Choker38–4115–16
Princess43–4617–18
Matinee50–5320–21
Opera58–6123–24
Rope / Lariat71+28+

* Pendant drop adds approx. 2–4 cm to the visual fall. Factor this when choosing length.

03 · Shoe Size

Measure your foot length from heel to longest toe while standing. We recommend measuring both feet and using the larger measurement.

Place a sheet of paper on a hard floor, stand on it with your heel against the wall, and mark the tip of your longest toe. Measure the distance in centimetres, then match below.

Foot Length (cm)EUUS Women'sUS Men'sUK
22.03553.52.5
22.535.55.543
23.03664.53.5
23.536.56.554
23.83775.54.5
24.1387.565
24.638.586.55.5
25.1398.576
25.44097.56.5
25.940.59.587
26.241108.57.5
26.74210.598
27.142.5119.58.5
27.6431210.59

* Sizing may vary by last and style. Our client team can advise on fit for specific models.

04 · Watch Fit

Two dimensions define a watch's presence on the wrist: case diameter and lug width. Both are measured in millimetres.

Case Diameter

28–32 mmPetite / Ladies'

Delicate, refined presence on the wrist

34–36 mmClassic

Versatile dress watch silhouette

38–40 mmStandard

Contemporary everyday wear

42–44 mmLarge

Statement piece; sporty or bold dress

46+ mmOversized

Architectural impact on the wrist

Lug Width (Strap Width)

The lug width determines strap compatibility. Measure the gap between the lugs at the strap attachment point.

Lug WidthCommonly Found On
16 mmPetite dress watches
18 mmClassic ladies' & slim men's
20 mmMost standard men's watches
22 mmSport & oversized models
24 mmDive & adventure watches

Wrist Circumference Guide

< 16 cm

Small

16–18 cm

Medium

> 18 cm

Large

* Case thickness and lug-to-lug length also influence comfort. Request detailed specifications from our advisors.

Still Unsure?

Our Client Advisors Are Here

For bespoke fitting advice, complimentary resizing enquiries, or assistance with any of our pieces, reach us directly.