If you are looking for more stability for your monitor, regardless of the surface it's on, look no further than the K&M 26792.
The K&M 26792 is a steel plate for the 26795 Design Monitor Stand. The plate weighs 3.582 kg and has a surface area of 320 x 5 x 280 mm. This plate includes 4 thread tips and 4 rubber studs.