Amti, I got these from Japanese supplier. They have a plant here in Bangkok here where they process all their pearls. From their Akoya farms in Vietnam and pearls they buy from farmers and on auctions. These pearls come from a stock from Australian farms.
Is the blue colour and the mix of colours caused by the unevenness of the nacre (thick and thin in different places)? or is it just simply the colour? If it's the colour, that is insanely beautiful!