Watermelon slice. 

This is tourmaline. They are just so cool. These stones form in long columnar crystals that striate from color to color due in part to irradiation! Seems like I just love that irradiation. Natural radiation from the earth did a little science on the Mn(2) to cause the pink color, and the green comes from 'variations of fluid chemistry' during formations. Learning about tourmalines is a rabbit hole. After getting lost in several pages of weird science, I have decided tourmalines are the octopuses of gems. They could be aliens. It's a case for the FBI. 

Set in silver, with a gold-fill band. 

Size 8

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