Stamped/Hallmarked “MEX” for Mexico Stamped/Hallmarked 950 on the inside of the Ring 95% Silver 5% Copper Unsure of the ring size but approximately 2’’ Inch inside circumference- approximately a ring size 6 Gem Color: Light Blue Vintage piece Material: Silver Gemstone: Opal Band Color: Silver Style: Bohemian and Hippie/Hippy Amazing rich blue with some bright green inside especially when shined in a bright light. Smooth & comfortable to the touch. Very well made and treated with love! When purchasing this ring, the box is not included- only used for photos however will be packaged with the upmost care!