The amazing work of Bruce Harding; AKA Beryl

[Garry H (Cut Nut)]

Sadly an unsung hero. He had an understanding of opticss in gems that was unsurpassed.

 

[AV_]

I had certainly read about ray tracing cut models long before finding this forum, and remember the name from even then, @Garry H (Cut Nut)

No kidding that this wisdom needs a fresh rewriting - so it is read again.