The Frog & British Library, Paris

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Publication Director : Paul CHANTLER

Revision date : 2007/02/01

Hosting : DonHost - www.donhost.co.uk

Contact : paul@frogpubs.com

If you were to take a lump of coal and squeeze for a long time at very high temperatures, you would end up with:

A - Graphite
B - Obsidian
C - A diamond