She didn't want me to put her down. I didn't want to. It was very obvious to me at that point that I had finally found the cat that was right for me. Or, maybe, the spirit of my wonderful Yoyo guided me to find the cat that would suit me in the next stage in my life. But, mostly, Cammie picked me.
Crystals are like that, too.
If you go to a store and keep going back to the same stone, even if it isn't the type or shape you went to get, that is probably the stone that is meant for you. Crystals may also wander away. We had a cat show up at our house a few years ago who was very sick. He stayed around the house for several days, and I finally took him to the veterinarian. As soon as the veterinarian told us we could let him run free, he was gone.