David Weaver
No detectable cutting power unlike the dry pigment from iron oxide. No feel of any kind of abrasion or grip when scrubbing the block on the corian.

Will have to look at MSDS to see if it even has alumina in it. Unusable.

Not sure that the scratches are from the abrasive vs. brisk work on corian and a scrap of hardwood - neither surface induced any cutting power from the rouge.