Looking for a source for iridescent dye to use in wood stabilizing.

I've been experimenting with wood hardner and dyes used in acrylic resin for tinting. This works well so far but I would like to make blanks with a n iridescent look and have found that Craft products has blanks but can't locate the dye to make my own.

I have been using low heat and vacuum chamber with good result but I'm always looking for a better way to stabilize if you have any.