Kimberlite Diamond (brand) and retailer of the 2010 Shanghai Expo. In 2014, Kimberlite Diamond founds China's first youth diamond fashion brand - KELLAN diamonds, and opens its first flagship store in Shanghai on September 19. As of 2016, the distribution network and branches in mainland China, Hong Kong, Canada and Belgium amount up to nearly 600 franchise stores, covering 30 provinces and cities in China and the brand is China's largest diamond retailer. In May, 2018, Kimberlite Diamond unveiled its new Shanghai flagship at the iconic landmark heritage Bund No.3. On July, 06 2018, Kimberlite Diamond launched its first boutique in Vancouver, Canada
Gemstone irradiation produce mixtures of blue and yellow-to-brown colors, so heating is required as an additional procedure to remove the yellowish color. In some cases, the new colors induced by artificial irradiation may fade rapidly when exposed to light or gentle heat, so some laboratories submit them to a "fade test" to determine color stability. Sometimes colorless or pink beryls become deep blue upon irradiation, which are called Maxixe-type beryl. However, the color easily fades when exposed to heat or light, so it has no practical jewelry application. Gemstone irradiation The gemstone irradiation is a process in which a gemstone is artificially