Ring size guide

Find your size

Inside diameter of a ring that fits

mm

Measure straight across the inside of the ring, edge to edge.

Size chart

US / CA	UK / AU	EU	Diameter mm	Circ. mm
6	L	52	16.5	51.9
7	N	54	17.3	54.5
8	P	57	18.2	57.2
9	R	59	18.9	59.3
10	T	62	19.8	62.3
11	V	65	20.7	65.0
12	X	68	21.5	67.5
13	Z	70	22.3	70.2
14	Z+2	72	23.0	72.3

How to measure

Ring I own · diameter

Pick a ring that fits the finger you're sizing.
Measure the inside diameter in mm.
Enter it above or match it to the chart.

Paper strip · circumference

Wrap a 5 mm strip of paper snugly around your finger.
Mark where it overlaps.
Measure the length in mm and enter it above.

Measure at the end of the day, when your hands are warm.
Between sizes, or ordering a wide band? Choose the larger size.
30-day size exchanges. Your new size ships free.

View the full ring size guide →

CLASSIC RINGS

BIRTHMARK

Marked by legacy.

$69 USD ~~$79~~

✦Solid Tungsten — Exceptionally scratch-resistant with a substantial, premium feel.
✦Purple Inner Band — A vibrant purple interior wrapped seamlessly inside the outer band.
✦Laser Engraved — Crisp, permanent engravings with exceptional precision.
✦Comfort Fit — Rounded interior for comfortable everyday wear.

★★★★★ 4.7 • 3,000+ Verified Reviews on Shop.App

Size (US): Size guide

6

7

8

9

10

11

12

13

14

30-day size exchanges · your new size ships free

Ships from Dallas, Texas

Tracked delivery to your door

4.7 · 23 reviews Read all

“Looks amazing and it fits perfectly”

Giovanni R.

“I bought it as a gift for my brother and he loved it! Such a pretty ring.”

Cynthia S.

“Great fit and spot on what it looks like”

Branden

“My boyfriend loved this gift for his birthday! Really good quality and looks just like the photos, im super happy about this purchase”

Melissa P.

“I bought this as a thumb ring for myself & I love it. This ring is great for any Jojo's fan!”

HAYLEY C.

The details

Materials & craft

Join the bloodline with solid tungsten, chosen for its strength and substantial weight.

Finished in an onyx black exterior with a purple inner band, creating a defined dual-tone design.

8mm wide comfort fit profile
Color transfer detailing
Hypoallergenic and designed for everyday wear

Fit

True to size

SmallTrueLarge

Between sizes? Go up a size.

Measure a ring you already wear and match it to our chart.

Care

Made for everyday wear

Keep it on

Washing hands
Showers & rain

Take it off

Pools & hot tubs
Cleaning products
Harsh chemicals

Chlorine and harsh chemicals wear the finish; some soaps and lotions can dull it over time.

RinseDry with a soft clothStore in its pouch

Community

Worn by the community

Real DMs, stories and shoots from people wearing NANIMERICA.

102,700+ customers worldwide

Reviews

What owners say

4.7/5from 23 reviews of BIRTHMARK

4.8 average across 2,624 NANIMERICA reviews

Jojo is one of my favorite anime’s so when I saw this and the reference to Jotaro and Star Platinum basically called for me to get it.

Branden G.

These rings are tough! The tungsten carbide is nice and hard, and the colors are great! The black and bright purple are a great contrast and definitely bring the JoJo feeling! Definitely grabbing a DBZ ring next!

Robbie K.