Thank you Tadol and Hassome. You have us headed in the right direction!
Zorro; here’s some links to expert knowledge on Chatoyance, especially the last one. You know my promise to stick to scientific conclusion and repeatable experimentation, rather than opinion. So, instead of me issuing an “opinion alert”, let’s learn together through these experienced perspectives.
https://en.wikipedia.org/wiki/Chatoyancy https://www.bing.com/search?q=chatoyancy+wood+grain&FORM=QSRE4 Or, here in The New Wood Finishing Book by Michael Dresdner. https://www.rockler.com/how-to/what-is-chatoyance/ Michael is the definitive source for woodworking and finish science. He’s devoted a life time to his work and contributed to our craft as a founding member of The American Society of Stringed Instrument Artisans.
For everyone: Put “Michael Dresdner” into your search engine for an instant bibliography on valuable and trustworthy knowhow for all things wood, finish, technique and lutherie.
All the best, Richard