Bel Vetro -- Italian for "beautiful glass" -- is an East Boston company that creates one-of-a-kind hand-blown light fixtures. The choices range from classically styled chandeliers such as Water Music, this cobalt and blue-gray piece of practical art that Bel Vetro owners, glass artists Lisa Blalock and Paulo DeLima, crafted using a 400-year-old Venetian process called reticcelo. The piece is 36-inches tall and 20-inches in diameter and consists of 16 glass elements.