Where to Find and Catch Lunatone
From Pokemon Go Wiki
Lunatone are found and captured in Nest and Habitat locations.
Nests
Lunatone Nests are locations that consistently spawn Lunatone.
Habitats
Lunatone Habitats are spawn locations where Lunatone is likely to be encountered, but not guaranteed the way a Nest is.
Additional Tips and Information
Best Nests
If you know a really good nest or any of the nests above is really good, list them here: