Emerald and diamonds 1920 's platinum ring

Elegant platinum ring circa 1920, adorned with a Colombian Emerald in closed setting of approximately 2 carats, surrounded by 10 old-cut diamonds for an estimated total weight of 2.6 carats. Openwork Hispanic decorations, openwork and chiseled flat basket, chiseled ring body adorned with small diamonds. French work and hallmarks of the period.