They’re beautiful tiles, let me just preface with that. My husband is a contractor and we used a tile saw with specialized glass blade. Didn’t matter. The color is on the back of the tile and the glass is clear so when you make cuts, the color crumbles and flakes off on the side you cut. We tried cutting right side up, upside down, slow and fast. Nothing helped. 

Photos didn’t do these justice, color-wise. They’re in between a celery and jadite green. Super pretty tile, not easy to work with.