Dark Black Natural Tourmaline From Brazil

Stone Size: Required 16 X 12mm 13 X 9mm 12 X 8mm 11 X 7mm 17 X 13mm 15 X 12mm 14 X 10mm 10 X 8mm 15 X 11mm 13mm X 9mm 15mm 13mm 12mm 10mm 9mm 8mm 7mm 6mm 5mm 7 X 5mm 9 X 7mm 8 X 6mm 14 X 7mm 12 X 6mm 11 X 6mm 11 X 9mm 18 X 13mm 12 X 9mm 1 Oz (2-3 Pieces) 4 Oz (10-12 Pieces) 1 Stone 3 Stones 6 Stones 1/4 Lb 1/2 Lb 1 Lb 12 X 10mm 8 Oz 16 Oz 1/4 Pound 1/2 Pound 1 Pound 17mm X 15mm 18mm X 14mm 18mm X 15mm 20mm X 14mm 3 To 6 Gram 6 To 10 Gram 8 X 9mm 8 X 10mm 8 X 11mm 8 X 12mm 3 To 4 Grams 5 To 6 Grams 7 To 8 Grams 9 To 10 Grams 11 To 15 Grams