Carolina Designer Dragons Leather Reptile Collar; Limited Edition, 10mm Regaliz Leather with Studs and Swarovski Fire Opal Rhinestones These limited edition leather collars by Carolina Designer Dragons feature imported Swarovski rhinestones from Austria and Regaliz leather from Spain. They add a little extra to your bearded dragons already unique personality. Certainly a conversation starter with others in our reptile community. The studs are the good kind with threaded screw attachment through the leather, not the nail head type which could risk scratching your reptile.