Glossary of terms

Alluvial
Alluvial diamonds are diamonds that have beenremoved from their primary position by erosion over millions of years, and have been deposited in a river bed, ocean floor or shoreline
Blood or conflict
diamond
A diamond mined in an unstable area and sold to finance war
Boart
Small pieces of diamonds
Carat
A carat is the international unit of measurement used to measure the weight of diamonds. One carat is the equivalent of 0.2 grams
Facet
A flat face of a diamond or other gem
Heat sink
A heat exchanger that absorbs or transmits excess heat allowing regulation of a device’s temperature
Igneous
Igneous rock is formed through the cooling and solidification of magma or lava
Inclusion
Small imperfection inside a diamond
Kimberlite
Igneous rock, which sometimes contains diamonds, named after the city of Kimberley in South Africa
Mohs’ Hardness
Scale
Mohs’ scale of mineral hardness is named after Friedrich Mohs, a mineralogist who invented a scale of hardness based on the ability of one mineral to scratch another
Nanodiamonds
Extremely tiny diamond particles, a thousand times smaller than a single human hair
Non-governmental
organisation
Non-profit organisation that operates independently of any government, typically one whose purpose is to address a social or political issue
Rough diamond
A diamond in its natural state – uncut and/or unpolished
Tailings dumps
Tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore