This Tungsten Carbide ring by Thorsten is one of our most unique styles. Many geometric facets have been handcrafted with high precision all around this ring giving it a crystallized look. Engraving available. See Pictures for Details. Does Not Delay Order. Available in 4mm, 6mm, and 8mm widths for couples who want a matching set. Tungsten Carbide is the newest and strongest metal for jewelry that does not scratch easily. Comfort Fit - domed interior band slides over the knuckle easier with less friction.