This is an exceptional and very large, natural sapphire from a brand new deposit in Mozambique. It has a color change from silvery grey-green under daylight to smoky pinkish-grey under incandescent light. The stone has a precision barion cushion cut with superb brilliance, something very rare in large sapphires which are usually cut for weight. It is only very slightly included and is completely untreated. All in all a wonderful rare gem that will be perfect for a high-end ring or pendant.