The image shows a small, round, white object with a rough, uneven surface. It appears to be made of stone or a similar material and is displayed in a glass case. The object has a label on it that reads "U.C.151818". The label also has some writing on it, but it is not clear what it says. The writing is in black ink and is not legible. The background is blurred, but there are other objects visible in the background.