Ruby 'Thread' Eternity BandEternity rings are believed to date back over 4000 years to ancient Egyptian times. Known as "Shen" rings these bands symbolised the eternal and were used by couples to mark special occasions. Our delicate twinkling Thread band can be worn alone, or as part of a stacked collection of heirlooms, symbolizing everlasting love. This Ruby band also makes a wonderful birthstone gift for any July babies. 1. 5 mm band width Natural mined rubies totaling 0.