Sistema Ring (Mega Pavé, 4mm, MA+DIA) from Parts of Four. MA: Matte Sterling Silver. Sanded at 320 grit DIA: Rough Diamond. The stones used in this item are cuts of diamond material that are removed from a larger chunk of diamond as they are attempting to get to the perfect diamond in the center. Each stone fragment and shape are absolutely unique Dimensions: Ring band width: 4 mm Ring band thickness: 3 mm Weight: 10 grams (size 9) Composition: Matte Sterling silver; Rough Diamond Made in Bali SKU: 1101-12-MA+DIA