A Wonderful Antique Tourmaline Diamond Ring, Vintage Victorian 18K Gold, circa 1900. This beautiful antique ring holds a faceted green tourmaline at center measuring about 7 x 7mm. It is joined by 24 sparkling white antique single cut diamonds. The setting is composed of 18K gold and silver to set off the diamonds. The use of silver for diamonds predates the use of white gold. There are also two genuine seed pearls set in the ring as well. Overall the ring measures about 3/4 inch long by about 3/4 inch wide from side to side. Ring Size: about 6 1/2 (could be resized by your jeweler or ask me about using mine before shipping). This ring was acquired through an estate collection and is in lovely vintage condition.