This is a sparkling pair of circa early 1900s sterling silver cufflinks, each set with a rectangle of goldstone. One cufflink is marked SiL for silver ont he back and the metal tests positive for sterling grade silver.
Goldstone is a type of glittering glass made with colloidal copper. It can take a smooth polish and be carved into beads or other artifacts like a semiprecious stone. Another common name is aventurine glass. Goldstone was first made in Venice in the 1600s.
This pair of cufflinks has a combined weight of 5 gr. Each cufflink face measures .5" x .625".
Condition is good, with some remaining tarnish from age. These were black with tarnish and I lightly cleaned them, but did not remove all tarnish.
These cufflinks came from an estate with many artifacts from Japan and China, spanning a time period from mid 1800s up to 1950s. These cufflinks may have come from one of those countries.