For anyone wanting to really impress their lady, a blue diamond ring should be extremely appealing, as it is very rare and its exclusivity makes it extremely desirable for anyone to own. It is quite strange that this exquisite diamond is actually so extraordinary because of lattice defects and impurities, but the internal imperfections do not in any way decrease its value.

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A natural diamond of that color gets called the diamond from the sea, not because it comes from the sea,…