Greenstone.
You could say either Pounamu or Taonga.
Pounamu
Pounamu is the Maori name for a type of greenstone or jade that holds cultural significance for the Maori people of New Zealand. It is highly valued for its beauty and spiritual properties, and is often used in traditional Maori carvings and jewelry.
pounamu (maori) and jade
Wai Pounamu
'Pounamu' is the correct term for what is often called 'greenstone'.
Te Wai Pounamu is a Maori name for the Island now commonly known as the South Island.
It is a form of Jade, commonly known as Greenstone
The Maori transliteration of the English name Malcolm is Maaka.
The first obvious answer would be Pounamu (Jade). There are many types and qualities, just as there were many uses, though this rock is still highly valued today.http://www.teara.govt.nz/EarthSeaAndSky/MineralResources/PounamuJadeOrGreenstone/en
The Maori translation of the English name "Shane" is typically "Hēni".
The South Island (known as Te Wai Pounamu or Te waka A Maui in Maori) is the name given to the largest of NZ's three main islands.