What is this?

[Retiredlawyer]

Found this with nothing similar nearby. Looks artificially smoothed maybe?- in area with lots of Native American artifacts. Or just a big hunk of naturally smooth quartz?

 

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[trdking]

That is a smooth rock

 

[TreasureCatto]

Milky quartz. Many of those of that shape are used for garden landscaping.

 

[Retiredlawyer]

Thank you. Does it polish up to a gloss?

 

[old digger]

Your item looks very similar to a gastrolith (gizzard stone). When Gizzard stones are found they still retain that shinny surface that is different than creek washed stones. Here are some Gastrolith's that I have found here in Montana.

 

[Clay Diggins]

It also resembles a partially melted marshmallow.

It's water tumbled quartz. Very common.

If the quartz has no cracks or major flaws it could take a high polish.

Then it would resemble a jellybean.