This ring, made for a woman, is from the Bedouin people of Yemen.
It is decorated with granulation and other work. The shoulders are decorated with triangles of implied filigree work. The bezel is raised and cylindrical. It has a plain, flat top.
Rings such as these were also favoured by the Rashaida people of Sudan, a tribe of a tribe of ethnic Bedouin Arabs who are descended from Bedouins from the Saudi Arabian peninsula.
The ring here is stable, wearable, and has clear age.
van Cutsem, A., A World of Rings: Africa, Asia, America, Skira, 2000.
Ransom, M., Silver Treasures from the Land of Sheba: Regional Yemeni Jewelry, AUC Press, 2014.
van Roode, S., Desert Silver: Understanding Traditional Jewellery from the Middle East and North Africa, BLKVLD, 2017.