Art Deco Ruby and diamond cluster drop earrings

These attractive Art Deco earrings feature a circular cluster set with an old round cut diamond in the centre within millgrain mount, surrounded with multiple small round cut diamonds and baguette cut rubies. The cluster is suspended from a tapered white gold bar, set with graduated old round cut diamonds with a round ruby at the base. All 18ct white gold. The earrings are very flat and smooth to touch. Hook on fittings. 
The drops measure 4.5cm in length.  
Circa 1920’s.