Glass
Let me preface this by saying that I'm happy with my purchase, overall. The item arrived beautifully packaged & intact. I have used it at least once every day since it arrived & I have no regrets. With that said, I wanna clear something up for anyone who might be wondering if this is a real moonstone.... No. It is glass. Wanna know how I can tell? Because of the teeny bubbles inside the "stones" and also the pour threads on the surface. Busted! Now, I have enough real stones in my life that I am not necessarily disappointed by not being able to rub one across my face. What I do take issue with is a seller making misleading or outright false claims about their products. I see it written multiple places that these are real. I just want you to make an informed decision.  I'm willing to bet that most of these items across Amazon are also glass & that's why they're so cheap. So there ya go. Would I buy it again knowing what I know? Yeah, probably.
Rating: 4 stars