Black Tourmaline Rough Pieces - Sold Individually
 
Medium - Average weight 21 Grams - Average Size 25  x 35 mm
Large - Average weight 26 Grams - Average Size 25  x 35 mm
X-Large - Average weight 32 Grams - Average Size 30  x 35 mm
 
Picture of 3 Pieces shows approx. size difference