Material: Natural Rose Quartz Stone, Rock Crystal, Aventurine Weight: Approx 70g Size: Approx 11(or9)cm *2cm from up to down, size difference is approx 2-4mm Package include: 1 Piece crystal massage  Use For: Weight Loss Roller ,Facial Massager, Body Massage All stones are unique and will vary from the one shown in the picture. The picture is only for your reference, natural stones will have color difference.