I hand cut this one of a kind, freeform focal bead out of natural, untreated Nacozari turquoise collected from a now-closed mine in the Sonoran desert. The material has NOT been stabilized or color treated. The color will darken and deepen as it naturally absorbs body oils from being handled. Measurements in the title. 2.5mm drill hole. CHAIN NOT INCLUDED. Feel free to check out all the items in my DVHdesigns Handmade Storefront and once there you can contact me with general inquiries or about a custom order. Thanks for shopping DVHdesigns!