I found this while cleaning out my parents' house. I didn't acquire it myself, so I don't know the details. Therefore, the material of the stone is also unknown. I believe it's been used, but it looks very clean with no noticeable scratches or deterioration. I am an amateur and lack knowledge, so I may have overlooked something. However, this item is being sold as-is, so please purchase it if you can judge from the images. ＜The following is an AI-generated description, so please consider it as a reference only.＞ Gold-plated cufflinks and a tie clip with a simple and elegant design featuring black stones. - Brand: VOCCO - Set Contents: Cufflinks and Tie Clip - Material: Gold-plated - Stone Color: Black - Design: Circular stone Thank you for viewing. Color...Gold系 (Gold-tone)