I never seen Kirkwall Martini glasses and they do look fantastic. I did, however, break 2 of them but were out of my own clumsiness and not due crystal quality. They are fragile, the Kirkwall indentation makes the glass thinner in some spots, so I recommend only taking them out for your more tactful guests. One place I drink at buys really thick glasses, so they can be dropped on the floor, toasted hard and won't break; this is not the case here!!This is crafted to look beautiful and visually appealing, not for manhandling in a busy bar... be careful toasting with those, keep your clinks soft!! Be gentle, delicate and they will least for years of faithful service.HAND WASH ONLY!!! I cannot stress this enough, do not put those glasses in a dishwasher.