Crystal vs. Glass
Crystal and glass differ between countries. In the states, crystal is associated with the presence of lead, where glass products contain less than 4% lead oxide. In 2012, Swarovski began their “Advanced Crystal” standard for a new, innovative lead-free crystal composition that complied with current laws and regulations over substances in finished products.
This standard is patented by Swarovski in the US, Japan, and 16 European countries. Swarovski's crystal glass with the “Advanced Crystal” technology makes their crystal glass just as brilliant as crystal containing lead.