The tray comes in ruby and cobalt, but etchings or decorations have not been seen on anything but crystal.
According to Michael Krumme: "It's definitely PC. I think that I have seen these with Loopie etch, and perhaps other etches. Also seen them in ruby and I believe amber. While similar to Gadroon in some ways, I suspect that it is probably a lone item with a unique mold number, if you know what I mean. It doesn't "obviously" go with any particular line. Even that oblong relish with the little crow's foot on each end of it may or may not have been considered to be part of Line 890, Crow's Foot Round."
The relish features a Gold Encrusted version of Lotus Rose Bud etch, commonly called Bridal Basket by collectors.