Polished Nuummite slab (rare) ex Kay Robertson

Item Description

Nuummite is an unapproved name for a metamorphic rock with iridescent amphiboles (Anthophyllite-Gedrite Series). The material is sometimes cut and polished as a gemstone (MINDAT). The name Nuummite which means "derived from Nuuk" in Greenlandic was given to the rock type which was found near Nuuk, by the town council of Nuuk. This is a beautiful highly lustrous polished slab with striking golden highlights. Specimens are very seldom on the market. 88 grams mass.