Tourmalines are the birthstone for the month of October. Get this gorgeous band for your loved ones born in October NOW! Following are the details on the piece: SKU:J-4-1004 Stone Type:Rubellite Tourmaline - 7 stones (3.5 MM) Stone Weight; 0.79 CTS Accent stone type: N/A Gold type:14K WHITE GOLD Total Article Weight: 2.44 GMS each