Buy Art Nouveau Floral Necklace-True Vintage

I bought this large vintage flower at an Antique show here in buy Denver. The flower is deep burgundy with green leaves. I chose burgundy foil glass beads and oval crystals in pale umber. Matching AB drops. I've never seen this flower before or since. OOAK heirloom.
Length: 21 inches
Pendant: 3 &1/2" X 1 &1/2"
Drops: 1 &1/2" V-chain, drops are 1/2 inch