Stone tool with hole?

[LittleJellyCats]

This has been in the family for a number of years and was found on a Saskatchewan farm. It has a small hole all the way through the center and is in a strange bell-type shape. It is also broken in half, but that seems to be posthumous.. Any idea what this could be or whether perhaps the hole was actually made by a modern drill?

 

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[nagant]

Maybe the tip of a stalactite or a stalagmite?