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[olgguy]

By the way my blade is sort of a thin kerf from Kingsley North's house brand, probably from China and made of steel.
           olgguy

[finegemdesigns]

I have the perfect material to ruin your blade. It's called Polychrome Jasper from Madagascar.

Also called Misty Mountain but I think this name came after Polychrome.

This jasper contains the rare element kryptonibladedestyrite which dissolves diamonds on contact.

[kirigol]

So...

I've bought a special agate cutter (MK/barranca) to test it... I'm not convinced. I cut an half chunk size moss agate in 20 minutes, ok, but a bruneau jasper in 2hours and half =)
For the meteorite, I had to cut slices in a gibeon siderite, so I've choose a "CBN meteorite blade" which is just a poor 10" Pro slicer. Awful job, I've cut 1 inch in 1 hour and half. The pro slicer was the first blade I've tried 20 years ago, and at this time it was already unable to cut anything (maybe except limonite ;)).
For me it's definitly the worst value blade !

In fact I suppose the best choice is the cheap chinese one, they do the job, if they deform you change, if they stop cutting, hit them with a hammer...
But it's only my opinion...