Astrid is a classic piece of jewelry which features a large clear stone delicately encased in metal. In the Astrid ring, the shank attaches to the outside of the feature piece, seen here in shiny 14K gold plating. Astrid is a classic piece of jewelry which features a large clear stone delicately encased in metal. In the Astrid ring, the shank attaches to the outside of the feature piece, seen here in shiny stainless steel.