This is an earring finding made of K18 (5:5) and the part that goes in the ear is soldered. The size is for a 5mm stone. The 3rd to 6th images are sample images of when a 5mm cubic zirconia stone is set. The size of the 5mm cubic zirconia used in the sample is: Outer diameter: 5mm Height: 3.12mm Please consider whether or not the stone can be set by comparing it to the size of the stone that can be set in the setting. To set the stone, place the stone and press the setting down from above, as shown in the 4th photo. You can set it like this, but if there is a gap at the bottom, it will be easy to come off. Therefore, if you press it down to the bottom as in the 5th photo, the claws of the setting will open slightly and attach to the bottom. After that, you should be able to set it by carefully bending the claws of the setting diagonally at the same time. I use stainless steel tweezers. The weight of the setting is about 0.2 grams per pair, and about 0.6 grams for 3 pairs (6 pieces). There is a K18 stamp.