Hello Johann,
I just adore crystals and I am studying them at the moment. Are you sure you didn't tie the crystal too tight round your neck, lol. Only joking. It is unlikely that it would affect your throat chakra.
Once when I walked into my salon I saw a stone on the floor, I never found out how it got there, guess what it was a tigers eye, I still have it and its only very small must have come in on someone's shoe.
I have an affinity with amethyst, and have a few big pieces. They are my birthstone. I decided to buy some more stones and walked around the store and settled on a stone called celestine its pale blue. I decided to read about it and guess what its the stone of Gemini my husbands birth stone, hows that for coincidence.
pat x