Thank you for viewing! Used item RAG Design Works ROBOKOBO Robot Necklace It was on display in the store. It's been about 5 years since it came into my possession. It has been this color since then, so it's not discolored; I believe it's made of this kind of material. Since it is not new, please refrain from purchasing if you are concerned about minor scratches or stains. Please read my profile. Also, #MikanShikaJewelry Please take a look at this as well!