Red And Purple Glitter Mermaid Tail Necklace £10.15 Red And Purple Glitter Mermaid Tail Necklace. If you love the little mermaid or any sea creature you will love this beautifully handmade mermaid necklace. Dive under the sea with this rare and unique necklace. Made from glass. Shiny glitter appearance. Available in sterling silver, black cord and silver plated. One Supplied.