For scientists, researchers, and element collectors - this is seriously rare stuff! This 10g of rhenium metal powder is 99.99% pure at 200 mesh fineness. Rhenium is one of the rarest elements in Earth's crust - we're talking one part per billion concentration rare. It has the second highest melting point of all metals (3180°C, only tungsten beats it) and a density of 21.02 g/cm³. The world only produces about 40-60 tons of rhenium annually, compared to over 2000 tons of gold, which tells you how scarce this metal is. Perfect for laboratory experiments, research projects, or as a premium addition to your element collection. The powder form makes it useful for various chemical and material science applications. Each batch is carefully prepared to maintain that 99.99% purity standard. Whether you're conducting advanced research or just appreciate rare elements, this rhenium powder represents some of the most exclusive material available to science enthusiasts and professionals.