These pieces have thick walls, making for a very sturdy construction. The intricacy lies in the rounded interior, which is artfully crafted to blend seamlessly with the outer design, delivering a timeless beauty. Perfect for the office or home. Attention California residents. Proposition 65 WARNING: Consuming foods or beverages that have been kept or served in leaded crystal products or handling products made of leaded crystal will expose you to lead, a chemical know to the State of California to cause birth defects or other reproductive harm.