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 

3.415 grams / 17.075 carats / 14.7 x 8.87 x 7.2 mm