Czech pressed glass 3d grape bunches in matte translucent amethyst purple with individual grape texture on both sides.. Top drilled front to back with approximately 1mm hole. These measure 34x22x9mm and are pretty heavy and substantial. Each one weighs about .3 oz. Probably best suited for pendants or chandelier/lamp/lampshade components. Sold per lot of 4 pieces.
These possibly are vintage but I cannot say for sure.