The diamond, the king of the gemstones, it sparkles and shines like no other in the world. Most likely it is in white and flawless quality. It is the hardest and most precious stone in the world. The diamond is also said to have healing properties. It can help eliminate impurities in coronary arteries as well as on kidneys and also be considered to be guardians of the clear thought. Most important for the quality assessment of the diamond are 4C’s carat weight, clarity = clarity, color = color, cut = cut.