This running triskele knot is found throughout the Book of Kells (~8th century AD). The pattern is an intricate Celtic interlace of a triskele design, which is split into two lines.
It is a classic loveknot which repeats every three steps, representing the past, present, and future; good luck for eternity.
The two lines represent two souls following the same path.
The ring is 8.5mm wide.