Gem replenishment entitlement governs exporter licence to procure replacement gems based on FOB export categories and calculation methods. Replenishment rules set the Gem Replenishment Authorisation entitlement as percentage rates applied to the remaining FOB value of exports by category: distinct rates for cut and polished emeralds, rubies and sapphires (with separate treatment for uncut/unset stones and different rates by per carat realisation bands), fixed percentages for semi precious/synthetic stones, pearls, and plain gold, silver and platinum jewellery, with calculation guidance allowing average per carat realisation or individual basis where specified.