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- Info Diamond - http://www.info-diamond.co.uk/
Polished and rough diamond: 4 C's, prices, advice, bourse, tools, geology, exploitation, website directory.
- Concealed Paradoxes in Mathematics and Physics - http://www.geocities.com/CapeCanaveral/Lab/8266/par_e.html
Notes on a few topics such as: 1 and prime numbers (Goldbach's conjuncture), a Fermat's theorem (lft), neighbourhoods in plane network, superlumnial travel and grand unified forces, gravitational holes.