Black Glass Cylinder Tapered Vases - Height: 40" | Opening: 8.5" | Base: 6.5" | Glass Thickness: 3/16" - The traditional cylindrical taper down vases have a wider top opening and narrow base, with a gradual and gentle slope. The black vase is produced with an inlay process by forming a glob of molten black colored glass as the inner core then dipped into a coat of molten, clear glass on the exterior. Once the molten glass is blown to the designed form, it undergoes a flashing process to ensure proper fusion. As a result, the colored vase has a scratch resistant surface. Black vases provide a distinctive contrast to ordinary clear vases and are frequently chosen as bold centerpieces as well as accent pieces. The size makes such vases especially fitting for lobbies and receptions rooms. They are also ideal for weddings, anniversaries, and all kinds of special occasions.