First recognised as a new element in the late 18th Century, titanium was not isolated in pure form until 1910 and has since become an increasingly important industrial metal. These commercially pure titanium cylinders demonstrate the metal's low density and resistance to tarnishing.

Zirconium is a strong, malleable, ductile, lustrous metal that is extremely resistant to heat and corrosion. It is the 18th most abundant element in the Earth's crust and is closely associated with hafnium in nature due to their chemical similarity.

Pure molybdenum is a heavy, lustrous, silver-grey metal with the fifth highest melting point of all the metals. For this reason molybdenum is traded commercially as a powder and, like many of the transition metals, most is used in alloys and only a small percentage as the pure metal. These pure molybdenum cylinders weigh just over half as much as our matching tungsten cylinders.

Tungsten is amongst the densest of all the elements, exceeded only by rhenium, platinum, iridium, osmium and some of the transuranic elements. This cylinder exceeds an astonishing one kilogram in weight, close to theoretical density. It always surprises those picking one up for the first time and makes an ideal companion piece to our matching magnesium cylinders which, although the same size, weigh only 92 grams.

A single one gram arc-melted pearl of pure rhenium together with a display vial with Re engraved on the lid. 

A single two gram arc-melted pearl of pure rhenium together with a display vial with Re engraved on the lid. 

A single five gram arc-melted pearl of pure rhenium together with a display vial with Re engraved on the lid. 

A single three gram arc-melted pearl of pure rhenium together with a display vial with Re engraved on the lid.