Vintage Herbert Rosenthal Double Bee Ruby Diamond 18K Flexible Bangle Bracelet. This is a beautiful and rare vintage bangle bracelet by Herbet Rosenthal known for making bee jewelry. We have never seen a bangle offer for sale before. The bangle portion has coiled flexible design with a bee on each end. The bee's connect and lock in place to secure the bangle. The bee's are set with 36 rubies and 1 diamond. Underneath each bee is a row of 5 diamonds. The natural rubies have a nice deep red color and great clarity. The diamonds are I color VS-2 clarity. Total gem weight 1.60 carats. Each bee has a slightly different design on the wings and feet. The bee's measure 20 mm wide. One bee is signed 18K and HR in a diamond shape. The bangle is in excellent condition. Weight 13.5 grams.