Necklace (a21) Type: Necklace Stone: Prehnite Rose Quartz Garnet Gemstone Stone Detail: Natural Quantity: 1Strand Material: Silver Plated Over Copper Weight: 89.019 gram. Length: 18 1/2" Stone Size: 3x5x4mm - 6x10x5mm Hardness: 5 Conversion: 1mm=0.039 inch,1 inch=25.41mm