20th century 10K bi-color White Sapphire full eternality ring s7 3.4g 5mm JR9945

20th century 10K bi-color White Sapphire full eternality ring 
A row of paste colorless white Sapphire gemstones in the center,
Both borders have unique bevel edges.
5.0mm wide, ring size 7.0, weighs 3.4 grams, no hallmark, tested for 10K