Rhodium weight is 80%, platinum is 20%. Pt content is only worth $150 so I will only charge for the Rhodium content. A pure binary alloy, no impurities. Needs 1.5 grams of pt to harden ($50). Is porous due to volatile fluids whilst cooling and hardening. Hardened you can control it for solid jewellery. Can be used as Rhodium electroplating solution. Drops straight into Pt/Rh thermocouple alloy but desired ratio must be measured correctly. Real easy to work with. Melts at low temp due to porosity but swims in Oxy-Acetylene displaying its extremely high boiling point. A fraction of extra Pt will raise the melting point, hardness and resilient shine quickly.