Illustrated Guide

to the natural beauty and value of coloured diamonds

Chameleon:

A name used to identify a class of coloured diamonds (usually olive) that temporarily change colour after having been stored in darkness or when gently heated. Chameleon diamonds exhibit a range of hues and tones from light to dark olive (stable colour phase) through light to medium yellow (unstable colour phase). After 24-48 hours in darkness, exposure to light gradually changes the colour of a chameleon diamond from the unstable yellow phase back to the stable olive phase. This is observed as an infinitely repeatable process.