Special Item: F-35 Fighter Jet Window Loose Stones for Class Rings (F35 Gem)

CURRENTLY RESTOCKING!  CHECK BACK SOON!   These are clear lab sapphires grown for the F-35, cut for Air Force Academy graduation rings.  We have sent samples of each size to Jostens and verified with their gemologist that these meet their custom stone specifications, so these will be perfect for a class ring. "The stones all fit our requirements" - Jostens Representative While these gems didn't make it into a F-35, as part of a graduation ring they have another chance to be in a fighter jet! This is a really cool material--lab sapphire grown for windows on the F35!  These aren't used on the cockpit but on a sensor array right below.  There are numerous sensors on the bottom of an F35 that allow for a 360 degree view in a wide spectral range.  With the incredible accelerations and speed that have to be withstood an ultra hard, ultra durable material like sapphire is needed.  But how do you make giant, flat sheets of sapphire?  Normally you'd cut windows out of a big round boule grown by