The Port Mourant distillery was built in 1732 and closed in 1955. Its double pot still built from Guyanese wood—Chlorocardium Rodiei (Greenheart), generally used for shipbuilding due to its good water resistance, which offers properties similar to copper for purifying sulphur compounds—was moved to Albion when Port Mourant closed, then Uitvlugt, and finally Diamond when Uitvlugt closed in 1999. It is known for producing a heavy, oily rum, bringing lots of relief to the famous navy rums so dear to the Royal Navy.

A blend of four casks from the Diamond distillery distilled in the famous Port Mourant wooden double pot still.