"flint glass" is a term for glassware with lead content, pressed and/or blown. In the United States, "flint glass" was produced before the civil war. The parts with lead content are much heavier and have a bell sound or ring when you ping the glass with your finger. 7 1/2 inches in diameter. This ancient bowl is in excellent condition.There are no cracks or chips. There are brands of utensil inside to be used and loved. This bowl is at least 130 years old. It would make a big hanging of rack, hostess, wedding, shower, or holiday gift. A beautiful piece to add to your collection or to an early american glass collector. For more eapg and crystal glassware articles please click here. For people with a deep love of vintage things. This item is made of glass.