what might this be?

hiii! i picked up this cutie at my local thriftstore for $3 & im trying to figure out what it is!

ive used google lense & it says it could be a "Vintage Mount Washington Diamond Quilted Satin Pink Cased Rose Bowl 3.0" x 3.5".

mine is 3.5 inches wide by 3inches tall. which leaves me to believe it to be mt washington, but im not seeing any of this specific red coloring?

it seems like mine is maybe sun-faded? there is a huge chip in the bottom where it might have had a sticker/signature. one side is more prominently "quilted" than the other. the diamonds dont seem to be super symmetrical. /(see pictures for reference)

thanks in advance!!! :)