Stored at home for several years. Used. Cleaned. The appraisal certificate is missing. However, a gemologist has confirmed that it is a diamond. Based on my amateur assessment, it is less than 5mm in size. No case included. Will be wrapped in bubble wrap and shipped in simple packaging. I no longer have the opportunity to use it, and I thought it would be a waste to throw it away, so I decided to list it. Please refrain from purchasing if you are overly concerned about details. I strive for smooth transactions. Please be sure to read my profile. Thank you. m(_ _)m