Real stone with a curve perfect to rub while you hold. It makes a great fidget toy to help calm anxiety. When you purchase the worry stone, it doesn't guarantee a specific one, unless you purchase while I'm live on TikTok and tell me which stone you've chosen during the live stream. Otherwise, you'll receive what I pick for you. The choices will depend on the inventory at the time. Choice may or may not include: Quartz, Rose Quartz, Green Aventurine, Mahogany Obsidian, Sodalite (blue and white), Tiger's Eye, Jasper, Lepord Jasper, Howlite, and Onyx. If you purchase any of my signed books while on my live TikTok you can chose a free worry stone. You can find me on TikTok at AuthorChristineMWalter.