The organic silver band is about 3-4 mm and the simplicity of the design makes it ideal for everyday wear.
Tanzanite is a relatively new discovered gemstone. First found in the late 60's in Tanzania. The colour is a beautiful blue/violet and is one of the birthstones  associated with the month of December.
Handmade in recycled sterling silver and the gemstone is 5mm.
 
Hallmarked at London Assay Office