Hello all! I picked this framed display of I guess the life cycle of a pearl Oyster and the types of pearls produced. I am guessing these were for display in a jewelry store but I'm hoping someone here can elaborate and tell me what type of Oysters/Pearls these are. I'm guessing Akoya but am not sure. I missed out on a similar but larger version of this later in the auction and was disappointed but that's life at the auction!