Lot of approximately 400 mouth-blown glass grape shaped drops. Each piece measures approximately 20mm x 15mm. These are artisan made blown glass pieces with visible internal air bubbles – a natural characteristic of traditional glass blowing. Details. Quantity: Approx. Size: 20mm x 15mm. Shape: Grape / berry drop. Material: Mouth-blown glass. Finish: Clear with internal air bubbles. Style: Antique lamp / chandelier style. The air bubbles inside each piece are not defects – they are part of the handmade glass process and add character and authenticity. Perfect for. Antique lamp restoration. Victorian lighting repair. Grape cluster lamps. Artisan lighting projects. Glass art installations. These are not modern molded plastic pieces – they are genuine blown glass. We are not responsible for these charges. The glass prisms might have unintentional few imperfections or variations which add value, interest and characteristic to the light fixture.