title: Carbonado: natural polycrystalline diamond.
abstract: Carbonados are porous aggregates of mostly xenomorphic diamond crystallites ranging in diameter from a fraction of a micron to over 20 microns. Crystalline inclusions (up to 3 percent) occur in the pores of the crystallites and consist mainly of orthoclase and small amounts of other igneous, metamorphic, and secondary minerals.
authors.forename: L F
authors.initials: LF
authors.lastname: Trueb
authors.forename: E C
authors.initials: EC
authors.lastname: De Wys