Sterling silver cocktail ring with blue agate stone size 7.5 signed 925

Vintage 925 sterling silver ring with deep blue agate marble cabochon. This ring measures about size 7.75 - will fit a 7.5 and tight in size 8. Filigree style band with unique shape. Marked 925 inside the band. The pictures don’t do this lovely ring justice - it is gorgeous! In excellent vintage condition - surface wear appropriate for age - no damage or flaws. Questions, please ask. Thanks for looking!