@pindac I built (actually, most of the woodwork was done to my specifications) three Pz wands for my air bearing DIY tonearm. First was just a flat piece 4mm thick Pz with a Pz spine. It was the lightest and worked quite well.
Second was a hollow cone of Pz with the grain running the length of the wand. It was heavier and better.
Third was a hollow cone consisting of rings epoxied together. This was heaviest and best.
Sound was all that you suggest: more detail, especially micro-detail. But the over-riding impressions were sweetness and realism. The harshness seemed to have all been damped away. Cartridge was a Koetsu with diamond cantilever.
I will also be building a lighter version of the last attempt, and a sapphire wand for comparison.