Blue and Green Guilloche enamel Domed hollow sterling silver vintage ring. Fair wearable used condition with small signs of wear. Enamel is bright with beautiful colors. The center green accent has a small chip in the center.  Base silver can be seen. Other enamel is smooth and solid though there are stress lines through some of the accents. Stamped on the inside of the band sterling 925 6. 

Acid tests positive for sterling silver. 

Ring measures size 6.