It shows a very strong color change from blue-purple to pink under different LEDs and pure blue under fluorescent illumination
7-fold or 9-fold symmetry
an ultra high tech crystal growing machine that grows the world's largest flat sapphires via the "boat" method aka HDSM
Their color change is strong
These are lab created sapphires which were grown for use as a sensor window in the F35 fighter jet but didn't meet spec
Pyropearls, Laser-forged gems made by Styropyro himself Type:Green Sapphire Pyropearl It shows a very strongThese are Pyropearls, genuine StyroPyro grown gemstones. Each was grown by Drake "Styropyro" Anthony himself. While in a previous video he made rubies, he's now experimenting to try to grow more gems. So far, he's made these cool green sapphires, but there are more to come. In the meantime, give peas a chance. Based on the ruby results, most of these probably have voids inside, which when split will have mini 'geodes' filled with microcrystals! Due to