Vibration Isolation for equipment using granite?

Granite used solely as a Sub Plinth will impact on the perception of the End Sound, but as has been mentioned not to all who have used it liking.

My experiences of using Granite, is that I have come to prefer it over other Stone as a Sub Plinth, it has been compared to Marble and Concrete.

Where it works best, is when used in a Sub Support configuration as a Tier in a assembly. I usually find Three Tiers with a selection of separator types works very well, and can be produced quite cheap, where the structure offers good impressions, which in my environment can impress similar to much more expensive sub support and footers.

If you really want to get the Best from a Single Tier Sub Plinth the material known widely as a Resin Impregnated Densified Wood, will be worthwhile investigating, as a material it is about the best there is. 

@billstevenson  read your response with a smile on my face.  You are, of course, totally correct, but let me say it like it is:  BS on top of more BS.  

@assetmgrsc Ah spoken like a true science denier.

I have a huge larvikite stone rack. Similar to granite i believe. It is very heavy and supported both from the wall and the floor, I can jump in front of the record player with no skipping. I have read about stone being too hard and reflective and so on, but so far my experiments have not proved this. I have glued damping material under the stone shelves. This works ok, although not dramatic. Damping on the top of the shelves, or big carpets over the whole rack - not much improvement. There is some effect of different component feet, but it seems that the thicker the stone shelf, the less difference. At the bottom of the shelf are thick stone slabs. It is like my rack is telling me, I can do this myself thank you.  

@billstevenson  Perhaps you misunderstand.  When I said that you are totally correct, I meant it.