Vintage 14 carat gold Mata Biak ring

A vintage Dutch 14 carat gold ring with a Mata Biak stone. 

A Mata Biak is the door or opercula of a snail shell which is found in Asia. 

The oval setting measures 18 mm by 16 mm. 

The ring size is 18.75 mm, the size can be modified if necessary. 

The ring and Mata Biak stone are in good condition.