Shaligram: sacred fossils.

Shaligrams are sacred Hindu fossils.
They are found in the Gandaki River. As a whole, the Shaligrams
are considered to be related to Vishnu , but various subtypes of Shaligram are found
linked to other Hindu Gods.

The most common Shaligrams are actually ammonite fossils of various shapes, but some may be belemnites or trilobites.
The majority of Shaligram
are black, but they are also sometimes found brown or gray in color.
We also sometimes find pyrite inclusions in certain Shaligram ,
which increases their value.