Solomons 3rd Jupiter Seal Protects Against Enemies & Evil Black Velvet Choker The standard length is about 13" with a 3" chain extender. You will receive this length unless you specify at checkout. Send a note at checkout if you need a custom length (12", 14", with 3" extender, etc) The ribbon is 5/8" wide. Each piece is handmade, by the artist Shoushan. Centerpiece is 3/4" round, made of alloy metal with glass cabochon dome to protect the artwork. Includes Gift Box