Guide to Chandelier Crystal Quality

Guide to Chandelier Crystal Quality

At root, crystal is composed of silica (sand), potash (a manufactured salt derived from potassium), and lead oxide. Lead oxide is added to a basic glass mixture for its optical refraction effects. Traditionally, lead content has been the defining feature of crystal. Leaded glass is typically used in church windows and certain applications in older homes, usually containing 5-20% lead, often on the lower side, as increasing lead content also increases the brittleness and fragility of the glass.

These days, leaded glass isn’t generally used in contemporary window treatments, but the same basic formula is used in cheaper chandelier crystal. Traditionally, once the lead content exceeds 20%, it is considered “crystal.” However, today the term is loosely applied to all chandelier glass adornments, regardless of lead content. The optimal lead content for crystal is between 20 and 30%, as this allows for the greatest refraction of light. It should also be noted that lead oxide is no longer the only additive that can produce refraction. Due to lead content restrictions over the last twenty years by both California and the European Union, several crystal manufacturers have introduced “lead-free” crystal, containing additives such as barium, zinc, or potassium oxides, which also enhance the refractive properties of glass.

While higher lead content tends to make crystal more fragile, this is less of a problem for chandelier crystals compared to other types of crystal (decanters, stemware, etc.), which need to be more robust because they are regularly handled. Once the chandelier crystal is in place, fragility shouldn’t be much of a problem, assuming that you’re not regularly swatting insects or bats near your chandelier or swinging from it, as the Sia song goes. However, lead content is only one factor in determining crystal quality. The attention given during the manufacturing process of crystal is perhaps even more crucial in determining quality than the raw ingredients.

Are you interested in learning more about china crystal chandelier accessorises manufacturers? Contact us today to secure an expert consultation!

For more custom hotel lobby chandelier information, please contact us. We will provide professional answers.

Contact us to discuss your requirements of high and low shape chandelier. Our experienced sales team can help you identify the options that best suit your needs.