Vintage Enamel Ring with 14k Yellow Gold Band and Base Metal Top

This Victorian enamel ring has an Islamic feel that makes it look almost micro mosaic. This ring looks like it was converted from something else, not by me. The band tests 14k yellow gold and the top seems to be a base metal material.

The enamel mosaic consists of blue, white, red and turquoise enamel, indicative of Islamic art work.

Measurements: 28.5 x 28.5 mm / 3.1 mm high off finger / shank 5.8 - 3 mm wide
Metal: 14k yellow gold band and base metal top
Size: 5 3/4
Markings: none
Weight: 5.5 grams
Circa: 1930‘ or older, difficult to date