This is a set of two necklaces. A: It becomes a double strand partway through, giving it a moderate volume. The pearls appear to be artificial but have a good shine. B: Judging by its weight, the material is likely glass. This shortness suggests it might be a choker. A: Length 61 cm (excluding adjuster) B: 46 cm While I believe they have been used infrequently, they are still pre-owned items. As they are worn directly on the skin, please refrain from purchasing if you are concerned. #NecklaceSet #FashionNecklace