You have the following information for Bridgeport Gems. Bridgeport uses the periodic method of accounting for its inventory transactions. Bridgeport only carries one brand and size of diamonds-all are identical. Each batch of diamonds purchased is carefully coded and marked with its purchase cost. March 1 Beginning inventory 186 diamonds at a cost of $380 per diamond. 3 Purchased 248 diamonds at a cost of $434 each. 5 Sold 232 diamonds for $744 each. 10 Purchased 418 diamonds at a cost of $476 each. 25 Sold 488 diamonds for $806 each.