This listing is for a Georg Jensen Denmark Modernist Sterling Silver Spectrolite Ring No 173.  It is approximately a size 6.  This ring was designed by Bent Gabrielsen Pedersen.  It is in good vintage condition with age/use related wear and tarnish, there are scratches and wear to the silver, and there are natural inclusions to the spectrolite.  Please look closely at all photos for condition.  If you have any questions, please message me.  Thanks for looking at my listing.