Platinum Hallmarks

Very briefly about platinum (as it is not commonly found on the market for us ordinary people):

Platinum Hallmarks:

PLAT

Pt – by the way, this is just chemical symbol for Platinum

Irid. Plat. – I would guess, this is Iridium-Platinum alloy

Pt 850 – 90% platinum (?)

Pt 900 – 90% platinum (?)

Pt 950 – 95% platinum (UK standard)

Pt 999 – pure platinum

Disclamer: never seen those ones in real life, the information collected from the Internet. I'd be delighted to add more information to this page, but obviously it's not my top priority (for simple practical reasons)