Variance limits for duty-free re-importation of cut and polished diamonds set; dimensional and weight tolerances specified under customs notification amendment Amendment to Notification No. 9/2012 Customs substitutes the proviso to condition (v) to allow tolerances for duty free re import of cut and polished diamonds: 0.05 mm in diameter for round shapes, 0.07 mm in length and breadth for other shapes, and 1 cent in weight, thereby defining variance limits that determine eligibility under the exemption.