I do like this combination for so many reasons.  First I think black and green are fabulous colors together.  Black tourmaline is all about protection and grounding.  It is also a
stone that increases flexibility, happiness, objectivity, strength and tolerance.  It also helps to remove energy blockages which comes to us in the way of anxiety and/or stress and confusion.  Green Turquoise is just too much fun to play with.  It isa stone of wisdom and spiritual journeys.   Turquoise helsp us with communication and the fact that this is green, helps even more with communication of the heart.  This stone is also great for clearing, bringing calm and strengthening the mind.  These are on silver chain having silver posts, with Swarovski crystals. They measure about 2 1/2 inches in length.