Guaranteed 100% natural howlite not treated in any way... Very nicely polished! White as a full moon in the sky, it's clear why Howlite would have one howling over its beauty. This stone is known to be the most calming stone for a collection or project. The gorgeous grey veining across the stark white stone breaks up the white to look like the moon glowing over the earth in the darkest of nights. It's a truly mystifying stone that almost feels like a good night's sleep.