A common misconception about New Zealand pounamu aka greenstone

....is that it’s all green. While imported stone varieties that are commonly known as jade tend to be more green and have less variety in their shades, New Zealand pounamu comes in a range of shades from dark, opaque black to milky, translucent grey and just about everything in between!

Pounamu is generally categorised into four varieties: inanga, kahurangi, kawakawa and tangiwai.

There are so many colours and shades that fluctuate between these four varieties, there are too many to define - and sometimes qualities of two varieties can be found in the same stone - but this is the very reason that no two pieces of pounamu are alike, making them all uniquely special.

Here are some of the types of stone that we’ve had the pleasure of working with in our time:

Chatoyant

Literally describing the silvery band of light caused by reflection from formations in the stone, chatoyancy is a phenomenon that can be found in many types of stone and is best seen up close so as to be able to turn the stone and enjoy the effect. It is incredibly rare to see this occurring in pounamu.

Flower Stone

Caused by the edge (rind) of the stone being oxidised, flower stone appears to have blooms of colouration throughout the stone. The colours of these blooms can range from grey and green to vibrant yellow and orange. This characteristic is unique to nephrite from this part of the world and is considered to be a prized variety of pounamu.

Inanga

Aptly named after the native fish, otherwise known as whitebait, this stone is a pearly greyish colour which sometimes has a blue hue in certain light. It also ranges in opacity. The lighter, soft shades tend to be translucent and the grey to light brown shades tend to be more opaque. Inanga is perhaps the most fragile variety; softer and quite heat-sensitive. If it’s not kept cool during the polishing process, white burn marks can appear which spoils the overall look. 

Kahurangi

A very bright green, translucent variety of pounamu without spots or flaws, this variety of greenstone seems to radiate its colour even without being held to light. The word kahurangi means prized, precious, treasured which is befitting of a stone as vibrant as this.

Kawakawa

Quite the opposite in vibrancy, kawakawa is named after the tree, whose leaves are rich green and heart-shaped. It is characterised by its dense appearance - only translucent at the extreme edge or, if thinly sliced, when held up to a strong light. It was historically considered too dark for jewellery but because it’s the strongest of all varieties was used frequently for tools such as toki (adzes) and patu (clubs). Some types of kawakawa exhibit beautiful orange-brownish colourations which are often referred to as Waimea Stone.

Kōkopu

Describing the fish-skin-like resemblance of this stone, kōkopu is the name of the native fish that whitebait grow up to be. This interestingly-patterned stone is also known as ‘mountain trout’ stone because of its appearance. Colours vary from darkish brown to light fawn. It’s mainly found in the Wainihinihi Creek and Arahura River.

Mutton Fat Stone

A lesser-known, and quite rare, variety of pounamu is Mutton Fat, which was given its name by the late Hettie Feith-Wells, a gemstone expert, regular buyer of unusual stones, and founder of the well-known rock and crystal shop “Hettie’s” in Christchurch. The stone has no distinct grain, making it easy to work with. It’s a muddy grey-green colour and when polished, the surface of the stone is very wax-like.

Pīpīwharauroa 

Named after the shining cuckoo - a short-tailed, bronze-green bird with a dark green-and-white face - this type of stone can be found in the tangiwai, inanga and kawakawa varieties. The shimmering qualities of this stone are similar to the chatoyant stone which are rather eye-catching.

Raukaraka

Often displaying impressive streaks of colour that range from yellow to olive green, raukaraka is typically a darker stone named after the karaka tree. It’s opaque and hard with almost no grain, and it’s not often seen in carved items because of its comparative rarity. Mainly found in the Arahura River, it’s also been found in the Kawhaka and Goldsborough areas.

Totoweka

Characterised by its reddish-brown tint, totoweka is named after the bird - weka, whose brown feathers are spotted, and toto meaning ‘blood’ for its reddish hues that appear through the stone. It is another of the more rare varieties of pounamu.

Tangiwai

Despite tangiwai being bowenite stone as opposed to nephrite, it is still recognised as being part of the pounamu family, and is in fact the most ancient variety of pounamu. This stone is sometimes completely transparent, with a glass-like appearance, and has been found in various shades ranging from olive green to brown to yellow to blue-ish green.

Even between these 11 variations of pounamu there is great diversity, and characteristics that transcend between familiar types. The thing that rings true for us here at Moko is that each piece of stone is beautiful in its own way and carries its own story which is often best told when it’s carved with great care into a shape that best represents each stone’s unique characteristics.