I received this necklace from daughters as a Christmas gift. I wore it today for the 2nd time. It came undone at home and I put it back on and ensured it was tight. This evening I noticed that the crystal had fallen off again. I had worn it out and am so sad. It looks like these were a temporary item so not sure that Saje can replace the crystal. There are 2 other reviews where posters have had the same issue so it appears as though there may be a defecti in some of these.