Advice please

Hi --

First of all, I found the lemon test (from this site) to be an
invaluable tool in selecting Stone (http://g603.net) for the kitchen and (http://maplered.com) I am so thankful
I happened upon it.  Lately I have seen some onyx Counter (http://GialloFiorito.com) s featured in
model homes.  I am guessing that some onyx may not really be onyx, just
as "Granite (http://tanbrown.org) " maybe not be Granite (http://tanbrown.org) , but can you compare the two Stone (http://g603.net) s
for durability, hardness, and (http://maplered.com) practicality??  How would using so-called
onyx on a bathoom Counter (http://GialloFiorito.com) compare to using so-called Granite (http://tanbrown.org) ??

Thanks,
Linda Warren