Black onyx, 6.5 ctw Sterling silver Made in USA SIZE Width, about 0.61'' Diameter, about 0.98'' Please note: Warranty services are provided exclusively by EFFY, Saks OFF 5th is not responsible for these services and any related inquiries or claims should be directed to EFFY at SO5Repairs@effygroup.com Click here for EFFY Warranty & Resizing. Center Core - M Jewelry/watches > Saks Off 5th. Effy. Size: 10. Color: black