Colour change sapphire purple to blue shift 0.66ct natural loose gemstone oval

A natural colour change sapphire.
 
The sapphire changes from purple under a yellow warm light to a more blue colour under a white light, this effect is natural.
 
This gem weighs 6mmX4.5mmX2.4mm.
 
This sapphire is 0.66cts, 2/3rd of a carat and niceley well over 1/2ct.
 
The sapphire is untreated, no heat treatment, this gem is Earth mined and faceted and polished by hand.
 
Due to the value, the item is in storage, if purchased, it will take up to 2 weeks to remove from insured storage and then send to the buyer, please only purchase if that is not a problem.

Please note that photos will appear different, monitor to monitor however I do not use any photo modification, photo adjustment or special lighting.