EOTS Cut F-35 Window Sapphire Rings in Sterling Silver (F35 Gem)

EOTS Cut F-35 Window Sapphire Rings in Sterling Silver (F35 Gem)These are lab created sapphires which were grown for use as a sensor window in the F35 fighter jet but didn't meet spec. They've been faceted and set in solid sterling silver rings! Note these stones glow blue under shortwave UV because of titanium contamination. 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

so much of what we get is from old stock

It has a totally unique color

ranging from 30% to well over 50%

and gives it to the holmium to emit as infrared

These are gems cut from a defective crystal of ytterbium aluminum garnet (or at least it was supposed to be)

These crystals are grown for use in laser rods

It can't be made by flame fusion or pulling methods

and some have a decent afterglow

While this material is grown with the flame fusion method

The material is vanadium YAG

This stone measures 23x21x19mm and weighs in at 45g--it is totally clean

relaxed wear while the crew neckline adds that neat