Vintage Italian Solid 18k Three-Tone Gold Open Motif Ring

Vintage solid 18k yellow gold ring with white and rose gold accents and an open ridged design.  ID#: RG857 Metal: 18k yellow, rose, and white gold  Size: 5 1/2  Band Width: 16.21-6.82mm  Weight: 10.48g Markings: '750' '1622 VI' (Italian maker's mark)