Not nearly as deep as a Diamond. I didn't measure, which I should have, but I would say at most it is 3/4th's as deep and maybe a little less than that.
My Diamond corner pockets are noticeably deeper to everyone that plays on it.
A couple of other things I forgot to include in my last reply:
1. I purchased the Olhausen in 1998 so that may make a difference; perhaps they have changed how deep their shelfs are.
2. The table I had was not a "commercial" table, it was a table made for home use. However, it was a 9 foot table.
The specs for my table may have been different than the commercial specs and they may have changed their specs over the years.
Just wanted to add some additional context.