Ring with green square stone

I haven’t been able to find my ring for ages and just discovered this website. I’ve been all over Dublin and also went to a wedding in Louth. It’s matte gold plated, the gold is rubbing off at parts. The band is kind of twisted and it’s adjustable, ie. has a gap so you can press together or pull apart to make smaller or larger. It has a large pale green stone, square, and there is many little facets to the surface of the stone, ie. it’s not a round/smooth stone. Photo is very blurry but shows size and colour. Thank you if anyone can help.