This Triquetra pendant is framed with a ring of runes.

The Triquetra is also known as the Trinity knot, which the Celtic Christian church used to represent the Holy Trinity.
However other cultures and religions have used the symbol, such as the Celts.

Dimensions: 35mm diameter, plus 9mm for the bale
Weight: pendant 12.2g, chain 2.5g
Chain: cord, approx 60cm length
Material: zinc alloy