Last but most defiantly not the least C that needs to be considered – the Certificate. GIA is considered the highest authority in grading diamonds by the trade. EGL is another major laboratory that is vastly used in the US market. EGL is not consistence in the way they grade diamonds around the world.
Cost is considered to be the 5th C. In most cases customers would have a certain price range that they would like to stay in. As a result we should look for most suitable combination of the four C’s for every customer. It is an individual decision, some customers would like to have a higher clarity and give up some color. There is always a trade off between the color clarity and the size (weight) of the diamond.
The third C is the cut of the diamond. This is the most important parameter in evaluating the value of the diamond. If the some is cut too shallow or too deep it looses brilliance and fire, it would have a lot of dark areas across the stone. This is the first thing that people would notice when looking at a diamond. Most of our diamonds are Ideal cut or Premium cut, the difference between those two cuts are the depth and table percentage. Different manufacture and laboratories throughout the globe would call both of those two cuts Ideal. To the untrained eye it would be very difficult to distinguish between the two. Although some in the diamond industry would say that the Ideal cut is the best cut we thing that they are both very good. Most manufacture would much rather cut a diamond close to Ideal cut proportions in order to retain the most amount of weight from the rough diamond. There is almost always a way to cut any diamond to Ideal proportions, but the trade off would be weight and every point (100 points = 1 carat) counts. To put in perspective, in a $10,000 per carat diamond every point is $100 that means that if the diamond can be finished at 3.12ct with a very good cut or 3.01ct in an excellent cut the difference would be $1,100. In most cases when customers are in the market for 3ct diamond they would consider both examples and in most cases would go with the larger one for the same total price. We also include in the cut t he shape of the diamond (Round, Princess, Oval, Asscher, Radiant, Cushion). As a rule of thumb, in 0.70ct and above diamonds round are about 15%-25% more expensive than any other cut. The reason behind this is that the manufacture loses the most amount of rough when they cut a round stone. Another reason is that the demand is higher. This factor should be taken into account as well when working with a budget (as most of us are). Keep in mind that most diamonds, regardless of the shape, would have a beautiful brilliance when cut to perfection.