UNSIGNED Spectacular lrg Vintage Brooch MOONSTONE?

BP15. UNSIGNED spectacular Brooch, likely c1940s/50s. Came from same place as the Alice Caviness brooch we have listed! Multicolor Glass (?) faceted stones, several sizes/shapes, surrounded by smooth rounded opaque stones. MOONSTONE or similar? Glass? I just don’t know. Gold-tone setting. MUCH dimension! Approx 2.75”. Needs deep clean. See no missing stones, but may have missed! Some scratches, etc. beautiful!! Searched for signature, can’t find one. Can’t guarantee age, origin or materials. NOTE/ISSUE! THE PIN BACK IS MISSING! Only 1 end remains. NEEDS REPAIR. 🌺💗