Please refrain from purchasing if you are concerned about scratches or stains, as this item has been stored by a non-professional. Please check the engravings in the photos. A quality assurance certificate is included, but I cannot provide it because it contains personal information. If you would like the quality assurance certificate, I can provide it if you are okay with me cutting out the personal information. Please let me know. If I don't hear from you, I will not include it. To prevent any issues, I will prioritize the person who purchases the item immediately, even during negotiations. Please check the size in the photos. The total weight is approximately 9.8 grams, as measured by a non-professional. Please read the profile before purchasing or commenting.