Mystery paperweight for ID

Unusual piece showing sort of a rock formation and some green around it. Appr. 8 cm wide, 6 cm high. Ground, unpolished base.
I am quite sure this was made using quartz rock and sand (there is even loose sand in some areas at the base).
The theme reminds me a little bit of the Baccarat "rocky landscape" paperweights, though quite a different execution.
My best guess would be "post-classic" period, but I am clueless to where it might come from.
I couldn't really find much in my internet searches to compare it with; here is an "antique" weight with similar stones
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https://www.thepaperweightcollection.com/products/antique-art-glass-paperweight-encased-rocks-mossy-lichen-stonesThanks for any help!
Michael