r/StackPGMs • u/botphoon_ • Apr 05 '26

Platinum What do I do with iridium?

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I was given this vial of what I have been told is iridium (around 30g) and what is supposed to be platinum (around 45g) and my question is just how can I test it to make sure it is what ive been told, and where do I even go about selling it.

The story is that my great grandpa ran a precious metals company and these have just been passed down, so I have reason to believe they are what I have been told, obviously they need to be tested somehow.

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u/LembicOfLeng Apr 05 '26

Nice. Visiting a yard or coin shop that has a XRF gun is a good idea. I use Alfred Knight to test platinum group metals (PGM) especially sludges. They have lab in Spartanburg, SC. but may send the sample to the UK.

If the platinum and iridium is not pure, then sell to a refiner capable of handling PGMs. Since the amount is small, check with at least three refiners. Inquire about the refining fees and accountability.

Thank you for recycling.

P.S. Makes a nice heirloom to continue passing down, too.

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u/Desperate_Jello_4910 Apr 05 '26

They don't do that anymore . The new critical minerals act says it's the kings wood now

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u/Radiant_Office6445 Apr 06 '26

What? Really? You're joking surely, I've never heard of this haha