Our rule of thumb is that coloured boards are not archival, my observations are based on that alone, you may be purchasing archival boards but we have used coloured mats only a couple of times in over 12 years and maybe the selections today are considered archival. I have not looked into the Crescent line for years.

Quote Originally Posted by tkamiya View Post

Do you see something I don't? I use all archival quality materials. The mat board I purchased locally were of acid-free, archival quality boards. They are made by Crescent and I use their SELECT series.