It trains your body to have cervical orgasms.
Cervical orgasms can be deeper and more blast-offy than clitoral orgasms.
It helps clear negative energy and blocks
that prevent you from your full sexual expression. Crystal energy = healing.
You'll be training your body to reach climax without the need for clitoral stimulation.
You'll also start becoming extremely aware of what feels good and what doesn't which you get to bring into the bedroom.
It awakens your goddess frequency.
Working with a crystal inside of your body helps you tune into your beauty, radiance, and feminine essence. You know having a crystal on your desk feels nice because it looks pretty... but take that feeling and bring it inside your body for pleasure and you've got crystal power x10.