Diamond is the second most stable form of carbon, after graphite. The diamond has the highest hardness and thermal conductivity of all materials known to the ...
The centenary and its history. The centenary is a coin that was first minted in 1921 as a common currency to commemorate the first centenary of Mexican independence ...
The diamond is the most expensive gem in the world. Many attempts have been made to duplicate it, cubic zirconia, regular zirconia, white sapphire and rhinestones like moissanite. Most of the…