Great beads! Probably Czech, 1920s-1930s era,from the design, stringing technique,& length of this necklace.
The best reference books on beads are by Sybille Jargsdorf,published by Schiffer-they examine beads of this era in great detail.
By the way, pink & green is probably my favourite colour combo!
Red & green are complimentary opposites on the colour wheel-pink being a lighter shade of red. Thus they are a perfect match......
I don't care if you all think I'm in bad taste either-to me head to toe beige is the ultimate in bad taste.