Celtic Triquetra Knot Open Sterling Silver Ring The beauty of Irish knot work is how it's a continuous loop symbolizing eternity, a beauty you can honor with this Celtic triquetra. A 3mm, sterling silver, open trinity ring. Open Design Measure: Width: 3mm Weight: 2.9 Grams Material: .925 Sterling Silver Measure: 3mm Band Width Weight: 2.9 grams The beauty of Irish knot work is how it&#039;s a continuous loop symbolizing eternity, a beauty you can honor with this Celtic triquetra. A 3mm, sterling silver, open trinity ring. Open Design Measure: Width: 3mm, Weight: 2.9 Grams, Material: .925 Sterling Silver