Antique Art Deco Filigree Ring - Emerald Green Glass Stone - Silver Tone - Egyptian Revival 

1920s

Side View - Note the Egyptian like design influences in the setting. Egyptian Revival was very popular in the 1920s to 1930s.

Antique Art Deco Era Citrine Filigree Ring - Sterling Silver - 1920s

Dainty Antique Art Deco Filigree Ring - Ruby Red Stone - Floral Setting - Silver Plate - 1920s

Antique Art Deco Era Filigree Ring - Sterling Silver - Dark Red Rhinestone - 1920s

(There are empty triangles on each side where triangle stones should be. But I do not believe they were ever there, because the prongs are in place and look like they were never used.)

Antique Art Deco Era Filigree Ring - Teal Glass Stone - Gold Wash Over Silver Tone Metal - 1920s

Antique Art Deco Costume Filigree Ring - Purple Glass Stone - Gold Wash Over Silver - C1920

(Uncas)

Antique Art Deco Era Ring - Filigree - Faux Pearl - Sterling Silver - 1920s