Bastion Alter Ring - Titanium

Size Guide

This is the Bastion Alter ring, a minimalist and imposing ring with fin-like slits that are proportional to each other following the golden ratio. This ring plays with the contrasting shadows to give it a unique look when on the finger. Being crafted from titanium it is very light, comfortable to wear and it is fully biocompatible.


This ring is handcrafted in our workshop near Lyon, France, from the finest and most durable materials. It is made to be worn in all conditions, anywhere, anytime. It is waterproof, resists chemicals and will last forever. 

  • Handmade in our workshop near Lyon, France.
  • The ring is machined and hand polished from pure titanium, resulting in a perfected shape with unparalleled precision, finish, and superior mechanical strength.
  • Pure Titanium: a very light metal, grey in color. Infinitely durable with the highest strength to weight ratio of any known element. It also resists corrosion and is hypoallergenic (perfect if you have sensitive skin).
  • For accurate sizing, please refer to our sizing guide. If you want a specific ring size outside our size range, please contact us at