Thanks, Bernard! There is a fine crackle effect on this piece (photo attached), but I thought it was because of the iridescence being stretched. I've never seen a canary opalescent mother of pearl piece to compare this to, so I don't know if it's this decor or not. There is a slight opaqueness that is consistent throughout the entire bowl. That makes it different enough from another JWW compote that I have (attached) that I couldn't assume an attribution. That one also has a crackle effect, wider at the center and finer towards the rim. That compote is transparent at the center (except for the opalescent stripes), becoming slightly opaque on the upper 2/3 of the compote. Regardless, the two compotes look great together--different shapes and patterns, yet both canary opalescent.