A long time ago (>10 years), I received an Amaryllis Bulb from my mom as a gift. It bloomed that first year, but from then on it did not. I am sure it is because I did not follow the procedure recommended too well, but I did try several things to no avail. Somewhere along the line it also split into 2 or 3 separate bulbs.
This spring, for some reason, it decided to bloom again after all these years! Quite impressively as well. Here are some pictures of the sequence: