Triquetra Trinity Knot Celtic Figure 8 Infinity Sterling Silver Ring Share this open 9mm infinity sign ring with someone you love eternally and infinitely. This woven figure 8 ring is sterling silver and great for loved ones. Face: 9mm W Measure: Width: 9mm Weight: 4.5 Grams Material: .925 Sterling Silver Measure: 3mm Band Width Weight: 4.5 grams