I have a radiant cut 1.27 carat diamond, VS2, H color. The GIA report shows minor feathering. I received the stone in February when my fiance proposed. He had the setting custom made and over the last several months we''ve had minor work done to the setting. One week ago we took the ring in for a final ''tweaking'' of the setting. A few days later I was looking at the set diamond and saw what appeared to my untrained eye as a crack coming from the top of the diamond going down toward the point! I did not feel a crack line, the diamond surface is still smooth, but I was upset to say the least. I took it to a third party jeweler and he confirmed that is an inclusion - extremely visible to the naked eye. The area of this inclusion is consistent with a feather marking on the GIA report. Last night we were at the jewelry store that did the setting work (the stone was bought online) and they seemed bewildered and suggested we come in tonight when the manager is in. The woman we spoke to last night casually mentioned that perhaps extra pressure from setting the stone had something to do with it. Are they liable or was it a flaw in the stone that just somehow came out now? I would appreciate your take on this, as I am no expert and want to be prepared for when we go back to the store tonight.