Now I have it a bit longer, it's greener indoors because of the yellow gold, it doesn't make the gem greener but it plays tricks on the eye and it appears green. Just a little of info in case anyone is purchasing the Indicolite set on JKT's website and deciding on metal colour.
Amguy I forgot to answer your question, the tourmaline is 3.57ct, 8.4 x9.2 x7.0mm.