Lead-free artificial crystal is to add other elements (such as potassium commonly used in optical glass) to the lead used in the production process to add to the glass. It not only contains the advantages of lead artificial crystal, but also is extremely elastic and particularly crystal clear. It makes the lead-free crystal cup excellent in light transmittance and presents a crystal-clear texture. Moreover, it does not contain lead, so it is more environmentally friendly, healthy, safe and non-toxic.
The common artificial crystal cups on the market should be accurately lead glass. After the lead content is high, the refractive index and dispersion (fire color) will be improved.