Nuummite

Metamorphic Rock

5.5–6Hardness (Mohs)

(Mg,Fe)₇Si₈O₂₂(OH)₂Chemistry

1Known origins & mines

The oldest gemstone on Earth at nearly 3 billion years: black orthoamphibolite from Greenland's Nuuk fjord flashing golden-bronze iridescence, marketed since 1983.

Known origins & mines

Nuuk Fjord Nuummite Quarries · Greenland

Active mining · Legendary locality

Source of Earth's oldest gemstone - nearly 3-billion-year-old black amphibolite flashing golden iridescence, marketed since 1983.…

Mineral family: Metamorphic Rock

Lapis Lazuli