Punch,  63 (1872), 84.

Black Diamonds



Notes, Drollery


Mineralogy, Chemistry, Commerce

    Argues that the 'chemical difference between the Diamond and Coal is so little, that Coal may be regarded as a form of Carbon approximating to that of Diamond'. Adds that while the difference in value between the substances was 'considerable', the price of coal is now so high that 'Coals are rapidly getting approximated to Diamonds'.

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