9ct White Gold Necklace with Iolite and Diamond pendant.
The Gemstone Iolite. Iolite is the gem variety of the mineral Cordierite. It describes the transparent to translucent form of Cordierite, and it has recently become a popular gemstone. Iolite can be light to deep blue, and usually has a purplish tinge to it. Deeper colored stones are more valuable.
Chain length 18inch, but also has a fastener to wear the chain at 16inches.