30 years ago, I bought a lovely translucent bowl of blue opal glass that was supposed to have been over 100 years old ($125.00 in a Florida antique shop). It has red highlights, depending on the lighting, just like an opal. It is marked Ezan and, in smaller lettering, France. It is about 11" across the open side, smooth inside, and on the back it has 7 fairly large, beautifully fashioned, fully contoured roses that are raised about 3/8" above the surface of the bowl. 6 of the roses are arranged in a circle and each one is on a raised smooth triangle with the point towards the edge of the bowl. The seventh rose in inside the raised circle of the base. All of the surface is homogenous --- no "whitened" areas, etc. Any ideas on the history of the piece or general value range? Thank you.