Only you know your husband, OP. How hurt would he be if you told him you love and appreciate the fact that he went to a lot of trouble to choose jewellery for you- you’re just not keen on the jewellery?
Personally, I wouldn’t be at all hurt by it, and I’d sooner my loved one told me the truth and ended up with something they really could treasure and enjoy wearing. Surely it’s patronising and more hurtful to let someone think you love something you dislike, then have them make the same mistake over and over...?
I also think most people are nowhere near as fragile about these things as we think they are. As I said, only you know your husband, but in your shoes I’d be inclined to tell him now - in the nicest possible way - before the rot sets in.