Artistic Russian Ring 14kt Rose Gold w/ Natural Rubies c'50s

A very beautiful Russian ring made with the graceful lines for which traditional old Russian jewelry designers were world-renown.  14k rose gold serves as a rich setting for two natural rubies.  Each ruby is collet set in a delicately designed crossover pattern.   Marked on the exterior of the band ~ 583, with the 5-pointed star and inside the star, the hammer & sickle.  Alongside this is a mark in a rectangle  using the number 7 followed by Cyrillic letters ΠB.  American ring size 8.5; British Q 1/2; Asian 17. Approximate size of the crossover feature in  0.80"L X 0.49"W.   Your ring will be delivered to you in a nice gift box.  USA shipping, handling and insurance compliments of Home Farm Antiques.