For a few years after the end of the Seattle World's Fair, you could still find Murata Pearl and their "fish for a pearl in an Oyster bed". I think the cost was from $5 to $20 to pick a certain number or size of oyster--late 1970's. Each was suppose to have a pearl or your money back and if they would buy the pearl if you didn't want it. I think that is how it went--anyway, My mother and I visited and she got four to my three--my three were dark--not sure what color. The place wanted to buy the three I had immediatly for twice what I paid--but I thought they were to pretty and I kept them. One I had set in a ring the smaller ones have never been set. The same for my mom. I still have the Murata Pearl brochure that the pearls were placed. I know they are cultured and probably not worth anything---but I thought it would be fun for you pearl lovers to see them. Feel free to let me know what you think---Thanks