Apple might be releasing limited edition of sapphire screened phones for the larger sized 5.5-inch models in the upcoming iPhone 6S, an Apple Insider report quoted Ming-Chi Kuo, Analyst of KGI Securities saying.

The Apple iPhone 6/ 6 Plus might not be featuring sapphire screen display, but Chinese smartphone manufacturer Dakale has went ahead in using the material in its latest model Dakale 3, which is priced at a mere RMB 1,499 (US $241.61) reported Chinese online media Forward.

Will sapphire substrates be found on iPhone 7? Latest market rumors from Chinese media have pointed to the possible appearance of sapphire material on the new iPhone 7, which will be mostly supplied by Foxconn, according to a China Times report.

Many consumers are still waiting in line to receive their iPhone 6, hardly a month has gone by since the smartphone’s launch, but market rumors about its successor are already being leaked by a British Christian news website.

Apple was granted a new patent for the use of LiquidMetal by the U.S. Patent and Trademark Office on Tuesday. The company could be planning to use LiquidMetal in conjunction with sapphire glass displays to form an integrated chassis for future iPhone models.