In this industry/sport, I have to figure that the name is there for the very reason that it defines the product. Anything more or less would be misleading and subject to lawsuits. I figure it has an abrasive that will will bring a ball to 2000 grit and leave it polished. Based on most Columbia pearl's initial performance, I would say this is a safe guess. No, I don't have any proof.
(The Spirit, like the similar AMF Valor/P, was supposed to, was rumored to have some particle in it that made it slightly stronger and more even than most other resin pearls. My Spirit was spookily extra strong for the mild drillign I gave it. Check out AMF's new website; they even say they have added more particles to the new Valor/P.)
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"Those who do not remember history are doomed to repeat it."