Lab Synthesized Pulled Corundum (By Czochralski Process).  Royal Blue Sapphire- the color is tops! 

This process utilizes a sapphire seed crystal and is considered one of the top methods of creating quality corundum synthetics.  

Please watch the video to see a cut gemstone from this material. The finger is pointing at the color of gemstone this rough cuts 

4.959 grams / 24.795 carats / 17.5 x 9.5 x 7.8 mm