Sistema Ring (Mega Pavé, Oval, 4mm, DA+DIA) from Parts of Four. DA: Dirty Sterling. Sterling silver, dipped in acid to create a subdued surface. Results will never be identical, and this nuance/variation should be seen as a characteristic of the uniqueness of the product. 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 Face/Top (WxL): 4 mm × 27 mm Ring band thickness: 3 mm Weight: 11 grams (size 9) Composition: Dirty Sterling silver; Rough Diamond Made in Bali SKU: 1101-11-DA+DIA