1920s era Deco men's cuff links with a blue goldstone art glass gem stone center in a round gold detailed setting.
These are the kind with the flip closures.

The setting is very detailed.

Approximately 1/2" round.

No name or markings.
The stone may be stone or art glass, it is hard to tell.
Either brass or gold filled.

In very good condition.

These may be slightly earlier.

This item is sold from a vintage boutique in PA.