Nephrite "hei-tiki" (neck pendant). These are believed to have their own "mana", are handed down as valuable heirlooms, and often given as gifts to seal important agreements. It has also been used for a range of tools such as adzes, as Māori had no metal tools before European contact. Commonly called "greenstone", jade jewellery in Māori designs is widely popular with tourists. Stone is often imported from Canada, China and Siberia, and Ngai Tahu runs a pounamu certification scheme to verify the authenticity of New Zealand stone. Nephrite Nephrite is a variety of the calcium, magnesium, and iron-rich amphibole minerals tremolite
The First Series of Standardized Forms of Words with Non-standardized Variant Forms The First Series of Standardized Forms of Words with Non-standardized Variant Forms The First Series of Standardized Forms of Words with Non-standardized Variant Forms () published on December 19, 2001 and officially implemented on March 31, 2002, is a list of 338 Standard Chinese words that have variant written forms (i.e. where the same word may be written with one or more different Chinese characters with the same pronunciation, referred to as "", translated into English in the official publication as "variant forms of the same word"). In the "First Series", one of the variant written forms for each word