Silver Cufflinks with a star cut stone

Silver cufflinks with a 4 pointed star cut stone. Cufflinks with gilded frames on two sides of the stone. The stone is in a smokey color but I'm not sure if it's a smokey quartz.

Hallmarks: 830 and Swedish import marks.

Measurements: 1.5X1.3 cm

This is a vintage piece of jewelery with minor wear that complies with its age. There is some patina on the silver.