Clark and Coombs Smoky Quartz antique Art Deco sterling silver ring. Good antique condition with small signs of normal wear. This unique ring is stamped with the iconic Clark and Coombs symbol and sterling on the inside of the band. The large Quartz stone is faceted and the backside of the stone does slightly exceed the ring housing so it touches the finger. 

Acid tests positive for sterling silver. 

Gemstone tested with Presidium II gemstone tester. 

Ring measures size 7 and 1/2.