Vintage Turquoise Ring. Turquoise Cluster Band. 10K Yellow Gold. Unique Wedding Band. Estate Jewelry. December Birthstone. 11th Anniversary

This is a gorgeous 1940s light blue turquoise cluster band. It has 16 robins egg blue turquoise in prong settings. This ring is hallmarked but identification has been difficult (see below) so It acid tested 10K. It would make a fantastic and unique wedding band. It is from a Dallas estate passed down through the family and I believe the ring was either from Germany or Russia due to the hallmarks being on the outside of the band (see pictures). However it is hard to narrow down between the two...