An extremely rare mineral, Nuummit’s occurrence is limited exclusively to the Nuuk region of southwestern Greenland from where it gets its name. The area of Nuuk where Nuummit occurs is also called ‘Isuakasia’, the origin of which dates back almost four billion years. And apart from Nuummit, this area is also a source of other precious stones such as the beautiful Tugtupite and Greenlandite, which also happens to be the oldest precious stone in the world. As the ‘Isuakasia’ is situated close to the Inland Ice Cap, it is difficult to access this region and thus these minerals will never be available in large quantities.

Used widely for centuries as beads and ornamental stones, Nuummit has only recently been named in the gemstone market. And have been designed into extremely attractive cabochons and miscellaneous shaped jewellery pieces.

Occurring in brown, golden brown, green and nearly black colors, Nuummit has a hardness of 5 - 6 and a Specific Gravity of 2.8. A foliated metamorphic rock, Nuummit is composed of Magnesium, Iron, Silicon, Oxygen and Hydrogen (Mg,Fe)7Si8O22(OH)2 and is approximately 3.8 billion years old, thus making it extremely unique.

Nuummit also occurs in extremely small amounts in Spain and southwest of Douglas, Converse County, Wyoming, USA.