I am married to a lovely Irish man, and one of my favourite Irish phrases is 'Cuisle Mo Chroi', a term of endearment meaning 'beat of my heart'.  The Cuisle (pronounced 'Kooshla') pendants are cast from an original silver form I made and come supplied on an 18" 1.7mm wide trace chain.
Super comfy, light to wear and it goes with everything!
Gold and gold vermeil heart option also available.