Vintage Bronze Metal Flower Power Necklace (Avon?)

Retro charm in very good used condition ~ textured metal creates a casual, rustic vibe ~ lightweight for its size ~ 16" + 3" extender ~ clear, yellow and peachy-pink stones ~ back is stamped “NR”, I think this is an Avon piece but can’t confirm 🧚 from a clean, pet & smoke-free home