Rare viewing stone

Rare viewing stone

Purchased from a stone collector.
When I showed it to a dealer specializing in viewing stones, they told me that it was once a very expensive stone.
I purchased viewing stones and other items in bulk, so I am offering this at an affordable price.
Given its natural texture and the age of the base, I believe this stone was appreciated and carefully handled as a decorative item a long time ago.

Dimensions are as shown in the photos.

Thank you.