Vintage Blue Floral Beaded Necklace double strand

Very pretty floral beaded necklace with roses and leaves. The main colors are blue and white however there are light green leaves scattered around. It can be worn as a double stranded choker style or else one single long necklace. Length from end of clasp to very last hanging rose is approx 18". The circumference if won as single strand is approx 30.5". I am not sure of the age of these. They did come from an estate sale which was full of pre-70s. Unsure if missing any beads. Looks full