1920s Handmade Filigree Natural Crystal Brooch

Beautifully polished natural crystal (agate?) stone in the center with lovely hand done metal filigree work around it, this pretty jewel was made probably sometimes between 1910-1930 era. Very pretty and unique that has a "Jewels of India" or Iranian appeal, but the trombone clasp to the reverse, something normally found on French jewelry. The stone is gorgeous with lots of different colors especially when held up to the light. It is in very good condition as you see, but it an older jewel. The clasp is in find working order. Please view all photos for approximate measurements and details