Size Guide
BrillianceDirect
Size Guide
Find your perfect fit before you buy — simple measuring methods for rings, bracelets, and necklaces.
Ring Sizing
Find Your Ring Size
Ring sizing in the US runs from size 3 to 13, including half sizes. The average woman's ring size is 6–7, and the average man's is 9–10. Not sure? We recommend measuring twice and sizing up a half size if you're between sizes.
Best time to measure: Fingers are slightly larger in the evening and when warm. Avoid measuring first thing in the morning or when cold. If your knuckle is significantly larger than your finger base, size for the knuckle and use a ring guard to secure the fit.
| US Size | Inside Diameter (mm) | Inside Circumference (mm) | UK / AU Size |
|---|---|---|---|
| 4 | 14.9 | 46.8 | H |
| 4.5 | 15.3 | 48.0 | I |
| 5 | 15.7 | 49.3 | J½ |
| 5.5 | 16.1 | 50.6 | K½ |
| 6 | 16.5 | 51.9 | M |
| 6.5 | 16.9 | 53.1 | N |
| 7 | 17.3 | 54.4 | O |
| 7.5 | 17.7 | 55.7 | P |
| 8 | 18.1 | 57.0 | Q |
| 8.5 | 18.5 | 58.3 | R |
| 9 | 18.9 | 59.5 | S |
| 9.5 | 19.4 | 60.8 | T |
| 10 | 19.8 | 62.1 | U |
| 10.5 | 20.2 | 63.4 | V |
| 11 | 20.6 | 64.7 | W |
Free resizing: All BrillianceDirect rings can be resized within 60 days of purchase. If you're unsure, order your best estimate and we'll make it right.
Bracelet Sizing
Find Your Bracelet Size
Bracelet sizing is based on wrist circumference plus a comfort allowance. A snug fit adds about 1 cm, a standard fit adds 1.5–2 cm, and a loose fit adds 2.5–3 cm to your wrist measurement.
| Size | Wrist Circumference | Bracelet Length (Standard Fit) | Best For |
|---|---|---|---|
| XS | 13–14 cm | 15 cm / 6" | Petite wrists |
| S | 14–15 cm | 16 cm / 6.3" | Small wrists |
| M | 15–17 cm | 18 cm / 7" | Average wrists (most common) |
| L | 17–18 cm | 19 cm / 7.5" | Larger wrists |
| XL | 18–19 cm | 20 cm / 7.9" | Extended fit |
Layering tip: If you plan to stack bracelets, size up by 0.5–1 cm for each additional piece to keep the look comfortable and intentional.
Necklace Sizing
Find Your Necklace Length
Necklace length determines where the pendant or chain falls on your body. The right length depends on your neckline, personal style, and whether you plan to layer. Use the guide below to visualize how each length will sit.
14" Collar — Sits at the base of the neck. Best for high necklines and statement pieces.
16" Choker — Rests just below the collarbone. The most popular length for pendants.
18" Princess — Falls at or just below the collarbone. The most versatile and universally flattering length.
20" Matinee — Sits between the collarbone and bust. Great for V-necks and layering.
24" Opera — Falls at the bust. Elegant and dramatic, ideal for formal wear.
30" Rope — Falls below the bust. Can be doubled for a layered look.
| Length | Name | Where It Falls | Best With |
|---|---|---|---|
| 14" | Collar | Base of neck | High necklines, turtlenecks |
| 16" | Choker | Just below collarbone | Scoop necks, pendants |
| 18" | Princess | At / just below collarbone | Most necklines — most versatile |
| 20" | Matinee | Between collarbone & bust | V-necks, layering |
| 24" | Opera | At the bust | Formal wear, evening looks |
| 30" | Rope | Below the bust | Casual, bohemian, layering |
Layering tip: For a curated layered look, combine necklaces that differ by at least 2" in length. A 16" + 18" + 22" combination is a classic starter set.
General Advice
Fit Tips & FAQs
A few things worth knowing before you buy.
Our guarantee: If your piece doesn't fit perfectly, contact us within 60 days and we'll make it right — resize, exchange, or credit. Lab-grown diamonds, zero stress.
Need a Physical Reference?
Print this guide to take with you, or contact us and we'll answer any sizing questions directly.
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