Carlsbad Caverns cave pearls - photo

Carlsbad Caverns cave pearls.

https://diqn32j8nouaz.cloudfront.net...s_fullsize.jpg


Previously:

https://www.homemadetools.net/forum/...490#post215618
https://www.homemadetools.net/forum/...581#post209219
https://www.homemadetools.net/forum/...966#post187274
https://www.homemadetools.net/forum/...942#post148858

https://en.wikipedia.org/wiki/Cave_pearl

If you want to know, there's quite a few further references. Very similar to pearls made in an oyster.

Mark