Jim Frost called it Corelon. Michael Prater put in Case knives from Jim  Frost and sold it at a premium price.   In the old days it was called  end of day celluloid. I tend to call it swirly plastic. I'm not a big fan of it, especially when it is marketed as something special or valuable.

When it is all white, it is called Cracked Ice or Imitation Pearl. I've also seen and own Imitation abalone.  And then there is tortoise shell. Who doesn't like Imitation tortoise shell!

I know today's celluloid is much more stable that what was used in the past. I'm of the understanding that much of what is called celluloid today is actually acrylic resins.  But at the end of the day, it is plastic, a cheap replacement material for higher priced natural materials. (bone, stag, hard woods, precious stones, etc.) So why does it demand a higher price tag than Delrin, another thermoplastic?

Is there anyone out there who is collecting modern celluloid, such as Case Corelon?

Is there anyone who collects older celluloid, specifically swirly or end of day material?

U.S Classic Tiger Eye Swirl.

Rough Rider  Blue/Brown Swirl (top) and Tortoise Shell (bottom)

Imperial Cracked Ice (often sold as MOP)

Wenger Snife (Rhythm)

Case Corelon (stock photo) - I don't own any Corelon.