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  • The Joestar Birthmark - NAnimerica
  • BIRTHMARK - NANIMERICA
  • The Joestar Birthmark - NAnimerica
  • The Joestar Birthmark - NAnimerica
  • The Joestar Birthmark - NAnimerica
  • The Joestar Birthmark - NAnimerica

Ring size guide

Find your size

mm

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

Size chart

US / CAUK / AUEUDiameter mmCirc. mm
6L5216.551.9
7N5417.354.5
8P5718.257.2
9R5918.959.3
10T6219.862.3
11V6520.765.0
12X6821.567.5
13Z7022.370.2
14Z+27223.072.3

How to measure

Ring I own · diameter

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

Paper strip · circumference

  1. Wrap a 5 mm strip of paper snugly around your finger.
  2. Mark where it overlaps.
  3. 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.
  • Not quite right? Exchange for another size within 30 days. We'll guide you every step of the way.
View the full ring size guide →

BIRTHMARK

Lifetime warranty · 30-day returns & exchanges

CLASSIC RINGS

BIRTHMARK

Marked by legacy.

Sonderpreis $69 USD Normaler Preis $79 USD
inkl. MwSt. zzgl. Versandkosten
  • ✦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.
Size (US): Size guide

30-day size exchanges · we'll guide you every step

Ships from Dallas, Texas

Tracked delivery to your door · no tariffs or duties
“Great fit and spot on what it looks like”
Branden · BIRTHMARK Read reviews

BIRTHMARK

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

Fit

True to 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+ collectors worldwide

Also worn by

Reviews

What owners say

4.7/5from 23 reviews of BIRTHMARK

4.8 average across 2,652 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.
I love it! It's a bit slimmer on the finger so it feels more comfortable and natural. I'm finally part of the Joestar family
Shane Keegan
1 / 3

Collector photos