Origin of St. Croix, Virgin Islands. Cruzan Rum is the cleanest rum of its kind. The Cruzan Aged Dark Rum is no exception, with its smooth, full-bodied and aromatic taste. With rum, one determines the certificate age of the rum by the youngest drop in the bottle. In the Cruzan Aged Dark rum we use a blend of rums aged 2-4 years to create a perfect result every time.