Vintage flower, butterfly and rhinestone ring

Vintage flower, butterfly and rhinestone ring, for size please see picture (I took a picture of the ring on the sizer, last picture). I am not sure what materials this ring is made of. I couldn't see any marks or stamps on the inside of the ring. I purchased this as vintage, several years ago, with some other pieces in the same lot. I am not an expert on vintage jewelry. I have not cleaned (I have polished with a soft cloth) and I have not done repairs on the ring. Normal wear for age. This is a beautiful ring. Please see pictures. If you have any questions or would like more details, please do not hesitate to ask. Non smoking home. We do have a dog. I will drop off for shipping next day, Monday through Saturday, in the morning. If you purchase on Saturday or Sunday, I will ship on Monday (If the post office is closed for a holiday, I will ship the following day). I welcome all reasonable offers, I will either accept or I will respond back with my best offer. Thank you for looking!