Bastion Ring - Tantalum

Size Guide

This is Bastion, a minimalist and imposing ring, handcrafted from pure tantalum, a rare, heavy, entirely biocompatible and everlasting metal with a natural dark grey color.

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 tantalum, resulting in a perfected shape with unparalleled precision, finish, and superior mechanical strength. It is 3mm thick and 23mm long.
  • Pure tantalum: a rare and heavy metal, which displays a beautiful and natural dark grey color, unique in jewelry. One of the hardest and most corrosion-resistant metals, it is also entirely hypoallergenic (perfect if you have sensitive skin).
  • This ring is custom made. By selecting the custom option, you can write your desired size in the comments section on the checkout page, or send us a message at To choose the proper size, please refer to our sizing guide.
    The default length of the ring is 23mm, but it can be adjusted to your liking.