STARDUST is the most advanced zirconia on the market, combining two yttrium contents into a single disc. Yttrium 4 Content on the cervical gradually transitions to an yttrium 5 content towards the incisal edge, giving your restoration a porcelain like finish. Now the STARDUST line up includes all classical plus Bleach 1 & 2 shades in two sizes; 14mm and 20mm