This antique ring is such a sweet design.  Set with gemstone in the colours red, white and blue, this type of ring is often known as "patriotic" and was possibly gifted at the start of the First World War.  The sapphire, diamond and ruby are yellow claw set in a three petalled flower design with a diamond set stem.  Arranged on diamond set cross over shoulders to a yellow gold band stamped "18ct" and testing as 18c t gold.  Finger size 8 (US/Canada), Q (UK/Australia) with some resizing possible.

Circa 1915 Diamond, Sapphire, Ruby Patriotic Ring