I found a pattern that calls for an opal tinsel. I have found all kinds of mylar including pearl, flash back, halographic, gold, silver but can't seem to locate any OPAL. Can someone shove me in the right direction. It was on a Dennis Potter fly tying pattern and he said it was new, but I can't even locate the stuff on line.
I edited this to add this on line video of the pattern that uses this material: http://www.riverhouseflyco.com/store/dvd1/example.html I own one of his DVDs and really like him as a presenter. He's a very talented tier.