Cerium oxide

[earth titan]

Twould appear this is in very short supply. Something about the chinese and rare earth metals.....

Any alternatives?

Is the stuff advertised by stone polishers the same stuff?

Is there a particular grade?

Just asking cos this is the only stuff it would appear to be difficult to source.

[FraserClarke]

I *think* the stuff used in stone polishing is much rougher grade, and not suitable for optics work.

Where are you looking? Galvoptics? Scientific-Mirrors? BeaconHill??

There are some European suppliers too, though I can't remember names off hand. You could also look at buying it from the US, as you'll only need 200g at most...

[beamish]

try Priory Polishes Online Shop, got some optical grade from them ages ago but seemed to be normal for them

[pete_l]

There seems to be no shortage of suppliers on eBay

[barkis]

You could use Jewellers Rouge, but it's messy and slow polishing, which is no bad thing.

Ron.

[Glasspusher]

I have used Cerium Oxide from a lapidary supplier with success.

John

[Kai]

I bought mine for Ebay with no issues , loads of sellers