Sorry for the delay in replying MrsJake, but we've had some health and family issues. I asked my husband what glass he used for the berries, but haven't gotten an answer -- my job was just to cut, grind, and copper foil pieces, not pick glass. :o) I do know it had raised bumps on one side. Thanks, CarolElaine and glssl vr - it was definitely a wonderful feeling when we first saw the light come through and yes, we cut every single tiny piece. Some were so small there was barely any peeking out from between the copper foil.

Although I don't have it (yet), what caught my eye and interest is the Craig Mitchell Smith foliage and flower mold. I've always wanted to make glass flowers and this looks like such a versatile and inexpensive way to do it all!