Danish Silverring with Lapis Lazuli stone by Brdr. Bjerring 1970s

A square shaped silver ring with the Afganisthan Lapis Lazuli blue square stone on top embraced by a solid silver band edge holding the stone. Designed and made by Brødrene Bjerring (brothers Bjerring) in the 1970s Denmark. Signed Brdr Bje Denmark
Inner diameter is 17 mm, total height of ring 27 mm. Size of stone 16 mm x 16 mm.  Perfect vintage condition.