SIZE 6 - Sterling silver (tested) intriguing impressionistic snake ring marked with some unresearched hallmarks.  The ring has a brutalist kind of vibe with a wood grain surface and an uneven edge that forms a snake curling around an egg.  The black egg has a light moon glow.  It is glass or stone, not plastic.  The egg is held in with 4 prongs.  The ring is artisan so one of a kind.  I believe the other hallmarks might be ROH STG. Please see photo.  

Some photos are enlarged to show detail.  From a smoke free home.  Thanks for looking.