yes Bapterosses products were all porcelain/ceramic looking. he was using the Prosser method to make his products; The process consisted of molding a cold paste under great pressure and then firing it. Additional hand painting was also used for decoration on many items
I don't think he tried to make beads other ways
here are some experimental and more elaborated chevrons he made to copy the Venetian which are on display in Briare, I think they are very interesting and unique
JP