Ariel Gordon Mini Helium Initial Charm Necklace in Yellow Gold: Made to order. Ready to ship in 4-6 weeks. Made to look like a mini Mylar balloon (and sized down from the OG Helium Initial Charm ), this three-dimensional pendant is a whimsical addition to any jewelry box. It’s done in solid (super durable) fourteen-karat yellow gold and dangles from a delicate sixteen-inch chain. Wear it solo or string it alongside another charm or two.14k gold Chain: 16"; Charm: 3/8" Personalization: Enter up to 1 character in the text field.