Silver Infinity Earrings With Purple CrystalCrystal Infinity Earrings These infinity style earrings are crafted from sterling silver, shaped into the classic symbol of eternity. Each earring is detailed with a line of purple crystals that follows the continuous curve of the design. The use of sterling silver provides a bright, durable finish that complements the colour of the stones, which are set directly into the metal for a seamless appearance.