Silver ring with a large cut rock crystal

Modernist silver ring with a large rock crystal.

adjustable ring size: approx. 17-17.25 mm at the moment

Hallmarks: OÖG, 830 Z9 = 1974 Örnéus Goldsmith in Älvsjö. This ring has Swedish import marks and I think it's imported from Finland to Sweden.

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