Initially, it may seem extremely daunting to be sitting in front of several thousand carats of
small diamonds, knowing that the likelihood of finding a diamond with a meaningful …

Earth's carbon, derived from planetesimals in the 1 AU region during accretion of the Solar
System, still retains similarities to carbon found in meteorites (Marty et al. 2013) even after …

Most diamonds are metasomatic minerals, which means they grew from fluids or melts that
moved through solid mantle rocks and chemically interacted with them. The involvement of …

Trace-element compositions of olivine from 75 mantle rocks of diverse origin, including
xenoliths from kimberlites, basaltic lavas and orogenic peridotites, were determined by laser …

The origin of cratonic diamonds is reviewed on the basis of nearly 5000 analyses of silicate,
oxide and sulphide inclusions in diamonds. Compositional fields are defined for common …

Geothermobarometric calculations for a worldwide database of inclusions in diamond
indicate that formation of the dominant harzburgitic diamond association occurred …

Minerals included in diamonds provide direct information about the petrologic and chemical
environment of diamond crystallization. They record information relating to local and …

Most diamonds form in a relatively narrow depth interval of Earth's subcontinental mantle
between 150 and 250 km. From carbon isotope analyses of diamond obtained in the 1970s …

The infiltration of fluids into continental lithospheric mantle is a key mechanism for
controlling abrupt changes in the chemical and physical properties of the lithospheric root …

A detailed petrological and geochemical study of low-temperature peridotite xenoliths from
Kimberley and northern Lesotho is presented to constrain the processes that led to the …