Tia Eternity Ring Green Shamrock Necklace and Clover Earrings Jewelry Set. Tia Eternity Ring Charm size is approx. 0.50 x 0.50 x 0.10 inches (HxWxD). Its circular shape is symbolic for endless belief in the message that is imprinted around the ring. These are motivational or sentimental messages to the wearer. Makes a great gift! Silver tone faceted ball chain necklace is 18 inches long with a spring ring clasp. Green Crystal Post Earrings have a steel post and a plastic comfort ear nut. Sweet green Irish Shamrock is hand painted enamel and is a famous symbol of Ireland and St. Patrick s Day. The symbol was used be St. Patrick to spread Christianity as a symbol of the Holy Trinity.