The key difference between crystal and glass is that crystal contains minerals that allow for a durable but thin glass with premium clarity—think crystal clear. Traditionally, real crystal contained lead, so if you’re thinking about purchasing a vintage set, you may want to take this into consideration. Nowadays, most crystal is lead-free, but if it’s a concern, double-check the contents of the material before purchasing. Glass tends to be lower in cost, will not absorb aromas, and is always dishwasher safe. Most glasses that are made of glass will have a lip at the rim, which is not ideal. Borosilicate glass, however, is high in durability as well as heat and scratch-resistant.