928g Height: 40mm Base diameter: 78mm Top diameter: 76mm I don't know its origin, I bought it at a used goods store. The surface with a marble pattern appears to be natural stone, but it's unknown. Brass is embedded inside, and it seems that fixed bolts etc. are inserted into the three holes surrounding the center spindle. It has a gloss and is generally clean, but there are slight scratches. There are marks around the holes where the spindle was attached. As a stabilizer, it has an extraordinary weight, about the same as a 1L milk carton, and it has the effect of stabilizing the record. It doesn't seem to slow down the rotation if it's a sturdy turntable, not a player with a thin platter.