Middle Eastern Umän (Oman) - Gilt Silver Pendant Necklace

I am pretty sure the main pendant is from Umän (Oman); however, I do think the chains were altered. So, I am not sure about their silver content. The pendant, however, is certainly of high grade silver. 

Dated to the 20th century

Measurements:
TBD

This item is located in our American depot, which ships from the U.S.A.