Lyra Atlas SL Cartridge Magnet type??

Neodymium isn't a superior one - it's just the strongest one.

"Platinum magnet" is marketing vague terminology. It should be cobalt-platinum.

@bukanona  LOL, in my books if a magnet is stronger...by definition it is superior. YMMV.

A platinum magnet would certainly be prettier. Is platinum even magnetic? Is he pulling our leg?

Dave in perfect world yes the more Gauss you'll get the more output cartridge will generate with less turns of wire into the coil.
Although do you know the reason why in this case it's disc shaped if  neodymium so prefect?

@geoffkait  The reason that I asked about Platinum magnets is that is what is utilized by Koetsu on their upper end models...and yet the question is..what exactly is a Platinum magnet? IMO, it is a marketing name given to a somarium cobalt magnet...which as we know is inferior in its gauss to a neodymium. @bukanona.  The answer to your question is widely available on the web.