I lack specialized knowledge, so details regarding the material, authenticity, brand, etc., are unknown. It is a pearl-style necklace with a clasp, and a case is also included. While there are no major damages visible externally, there are minor scratches, stains, and dullness due to aging. Please check the condition in the photos. Please purchase only if you understand that this is a sale of the item as is and that it is a used item. * Due to being abandoned property, detailed confirmation and warranty are not possible. * Returns and complaints are not accepted.