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Tungsten is a very hard and dense metal with hardness between 8.5 and 9.5 on the Mohs hardness scale (Diamonds are a 10 - the highest). Its density, similar to that of gold, allows tungsten to be used in jewelry as an alternative to gold or platinum. Tung?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????��???��???????��???��???��???????????????????????��???????��???��???��???��???��???��???��????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????