I have the large 14mm albion with prasiolite and I like the color, I think the larger stone is a bit denser color, but I do have a problem keeping it clean. Moisture seems to gather underneath and nothing I do unfogs it, tried a hair dryer and everything else I could think of. I had the same problem with a pale green quartz ring by Judith Ripka. Ripka told me they would take it the stone out and clean it but what a pain.