If you are thinking about investing in diamonds, you should know all the details about the specific type "investment diamond." It is an especially safe and profitable diamonds investment instrument that can suppose an excellent acquisition to your investment portfolio. What are investment diamonds? Investment diamonds are cut and polished gemstones, which have many particular characteristics regarding symmetry, cutting, purity and weight. Traditionally, the 4C is used to refer to Cut, Color, Carat (or Carat by its English denomination) and Clarity. The diamonds with the best qualifications in these aspects are of the highest quality and, as such, they are scarce and precious. For this reason, they require a certificate of authenticity and quality issued by a house of international prestige. The GI (Gemological Institute) is the most accredited institution in the world when it comes to diamond valuation and certification. Diamonds certified by the GI labor...