Pounamu Pounamu Pounamu refers to several types of hard, durable and highly valued nephrite jade, bowenite, or serpentinite stone found in southern New Zealand. Pounamu is the Māori name. These rocks are also generically known as "greenstone" in New Zealand English. There are two systems for classifying pounamu. Geologically, the rock falls into the three categories named above, but Māori classify pounamu by appearance. The main classifications are "kawakawa", "kahurangi", "īnanga", and "tangiwai". The first three are nephrite jade, while "tangiwai" is a form of bowenite. In modern usage "pounamu" almost always refers to nephrite jade. Pounamu is generally found in
Ornamental turning Lukin "Ornamental Turning", by T D Walshaw, and "Holtzapffel Volume VI" by John F.Edwards, 2013. Reprints of all these books are usually obtainable. The Society of Ornamental Turners was founded in 1948 with the object to encourage, develop and promote the study and practice of the art and science of ornamental turning. Its members meet quarterly in London to display examples of their work, share their experiences and attend a lecture or demonstration. Seminars and outings to places of interest are also arranged. A bulletin containing articles on all aspects of ornamental turning and news of the society is published