There is no standard price for any gemstone. Prices vary according to who's buying and who's selling. In this range, the most important variable will be that you have a GIA certificate attesting to these high qualities.
Today, you can purchase a stone of about three carats with this colour, cut and clarity (internally flawless) and spend between US$111,000+ and US$122,000+. Neither list 'ideal' as the cut, however, but do list Very Good.
You can buy a 6.01 carat Flawless diamond today on Blue Nile, with an F colour and pay just over US$423,000.
The value of a flawless 0.75 carat diamond can vary greatly depending on factors such as cut quality, color, and clarity. However, as a rough estimate, you can expect to pay anywhere from $2,000 to $6,000 for a high-quality flawless 0.75 carat diamond.
Today, on Blue Nile, you can buy a diamond -- internally flawless, not flawless (may be able to cut to flawless) -- of this approximate weight, and pay between US$456,181 and US$479,192, depending on the cut and exact carat weight that you want. A flawless diamond of this carat weight may become available at an auction house, where you could purchase it for the auction price. Without endorsement from Andwers, you can watch for such an auction, below.
The carat defines the standard unit of weight measurement of a diamond.
Diamonds are valued by clarity -- i.e., flawless, colour, carat weight and cut. Today on Blue Nile, you can purchase a flawless diamond weighing about one carat and pay between US$2,815 and US$15,540, depending on the colour, the cut and its quality and the exact carat weight you want.
A flawless stone of this size is extremely rare. Take your diamond to a certified gemologist, who will certify that the diamond is indeed flawless, and who will help you describe the stone otherwise: its colour and cut will also affect its price.
Carat for carat, we usually see a diamond costing more than an emerald. That's a generalization, but it quite accurate. Carats (carat weight or size), cut, color and clarity are the variables that determine price.
Your diamond may be a black diamond, if it's a diamond. There is a black diamond scale which ranks stones with AAA grades. Diamonds that are flawless are labeled IF for internally flawless, or FL for flawless. This stone could also be something other than a diamond. Only a gemologist can give you the value, based on its cut and determination of how the stone achieved its colour.
The 'best quality diamond' is the diamond that you can afford. If you want an investment quality diamond -- which some consider the 'best', look for a fancy intense coloured or a D colour diamond, or a Flawless or Internally Flawless diamond with an excellent cut in the shape and carat size that you want. Your trusted local jeweler can sell it to you.
Every diamond is valued according -- not only to its clarity and colour, as above, but must include its cut and carat weight in addition.
Yes. A diamond cutter can help you plan a new cut for an existing cut-diamond. Be aware that carat weight will be lost in this process and usually, depending on its clarity, could devalue or improve the value of the diamond. For example, the diamond cutter may be able to plan a cut that renders an Internally Flawless diamond a Flawless diamond. This may increase its value. However, if a different cut is desired and the carat-weight loss is significant, the diamond may be devalued.
A Flawless diamond is called Flawless on the clarity scale. The diamond is also graded according to its colour, its carat weight and its cut. Unless the stone is larger than about 10 carats, it might not have a name. However, if it is a strikingly unusual colour, a smaller stone might be named. You can read more about named diamonds, below.