It was wow when we saw this Chevron Amethyst large tumbles on a business trip. The purple is an amazing colour – nice Royal Purple contrasting with the pure white. They display the wonderful banding which is why this is also known as banded amethyst.
I find this crystal is particular good for those people who tend to run on adrenalin as it slows/calms them down by helping them to come out of the busy mind and back to connecting to their body and the Earth. I have had several customers report that it does help dispense migraines and reduce insomnia. Read more on the Healing tab.
Dimensions are for the longest chevron amethyst large tumble. I will intuit which of these meet your needs.