These earrings are made of hallmarked sterling silver and is designed in a trinity knot design. The simplest of Celtic Knots symbolizing a trune God. For the Celts everything came in threes, maid, mother, crone & the three elements earth, fire and water. Christainity embraced this knot to symbolize the Father, Son and Holy Spirit in many of the early Christian illuminated manuscripts such as the book of kells. This earrings are 8.5mm in height and 11.5 mm in width.