Mermaid Tail with Sparkly Blue Dangly Charm Earrings! Add these colorful guys to your jewelry! These pretty earrings feature sparkling blue dangly charms hanging from beautiful mermaid tails. So bright & they pick up all the colors around them. Silver metal base, 2" tall dangling earrings. Nickel free, Zinc alloy, Iron and Glass hypoallergenic earrings. Fun Fashion. Great Gift Idea or just buy them for Yourself!