Get the Mardi Gras Party Started with Mardi Gras Beads. Metallic colors accent these 4 mm bead necklaces. These necklaces are sold by the gross so they are perfect for large scale Mardi Gras parties or other events.. Looking for unique and fun wearables for Mardi Gras? We have a wide selection of costume accessories to make your Mardi Gras celebration a hit! Find the bling you need to make your Mardi Gras or Carnival costume a hit!