Materials: Brass, Akoya pearl (genuine pearl) Pearl size: 6.5mm Ring size: Free size Not perfectly round. There are fine scratches and irregularities. You can see them in the 5th photo. There are irregularities in the nacre, so I'm offering it at a low price. The back of the pearl is cut, but it's the back, so it's not noticeable. The nacre is thick and has a luster. As it is a genuine pearl, there are natural imperfections, so please refrain from purchasing if you are concerned. Will be shipped without a box. As this is a pre-owned item stored at home, we cannot accept claims or refunds, so please ask any questions or address any concerns before making a purchase.