These beautiful stud earrings are made with Sterling Silver stud posts and Mother of Pearl shell. Black lip mother-of-pearl comes from black lipped oyster shells and has a distinctive dark grey lustrous colouring. Wearing mother-of-pearl shell is believed to have a soothing, motherly protection against negative energy, attracts prosperity and heightens imagination. Mother-of-pearl is associated with the throat Chakra. ~Flat back style stone with butterfly push back closure ~Semi-precious stone size 8 mm x 10 mm ~Sterling Silver fixings ensures all pieces are hypoallergenic ~Each set comes gift boxed Due to these being made from natural shell, the item you receive may not look exactly like the one featured in the product photograph. This jewellery is made in the UK using Sterling Silver (Ag925) fixings and Mother of Pearl shell from certified suppliers.