This Vintage Black Onyx & Natural Pearl Necklace is a stunning piece of fine jewelry made with sterling silver and featuring a beautiful black onyx main stone with a natural pearl secondary stone. The necklace has a spring ring closure, adjustable length, and extender chain, making it versatile and comfortable to wear. The classic black color and oval shape of the main stone give it a timeless and elegant look, perfect for female wearers. It is signed by the brand GSJ and is a part of their collection, adding a touch of exclusivity to this gemstone-themed piece.Its my opinion thst these are Natural Pearls Im making this statement simply because there are no 2 alike they all appear to be differently shaped and none of them are uniform shape, only in size and coloring are they similar. Also a couple of them appear to shaped funny. Off of that observation I believe they are not cultured as cultured Pearls tend to be of a uniform shape, size and color these do not follow the same traits. I AM NOT A JEWELER, nor a trained professional but this is my belief and that is why feel this way.