Material
18k gold plated brass with 2 microns.
The collar adjusts to the neck as it is made of very flexible material.
Why this material?
Well, after studying the behavior of many materials with gold plating, we have discovered that it is ideal since it withstands gold or silver plating better than any other.
To get to this point we had to do many tests in laboratories until we found the desired one. It is a completely anti-allergenic material.