Every diamond is valued by its cut, clarity, colour in addition to its carat weight.
The value of a diamond -- regardless of its colour -- depends on its cut, its clarity, its colour and its carat weight. A local jeweler can give you the answer you want.
It depends on whether it is treated or natural. The cost of a treated black diamond ranges from as low as $100 to $200 per carat whereas a natural diamond, which is GIA certified the cost per carat ranges from $2500 to $3000, depending on the quality.
You can buy a one carat diamond today on Blue Nile and spend between US$1,849 and US$11,216. The price varies according to the diamond's exact carat weight, cut, colour and clarity. One carat of diamond weight equals .20 grammes, or 0.00705479239 ounces. Can you do the math?
The value of a 0.24-carat diamond can vary significantly based on factors such as cut, clarity, color, and overall quality. Typically, prices for diamonds can range from about $500 to $2,500 per carat, which means a 0.24-carat diamond might be worth between $120 and $600. However, for a precise valuation, it's best to consult with a certified gemologist or jeweler.
A diamond is valued by its cut, clarity, carat weight and colour. A local jeweler can show you a stone and give you a precise answer.
It depends on the seller and quality but on average it is worth about $196 per caratAnother AnswerAccording to the link, below, the average purchase price is slightly higher for one carat of black diamond: US$1,015 to US$1,450.
The value of a diamond depends on its cut, its clarity, its colour and its carat weight. A local jeweler can give you the answer you want.
The largest Flawless, D Colour diamond for sale today on Blue Nile weighs 7.65 carats and sells for US$1,167,550 or US$152,621 per carat. (You can calculate your 10-carat estimate from this per carat value.) You may be able to find a different 'perfect' and differently coloured diamond at an auction house that weighs exactly 10 carats. The diamond could be a Deep Fancy yellow, blue, pink, or other colour. There, the price will be established by the bidders in the room at the time of sale. A deep fancy coloured diamond that is flawless and large will probably cost you more per carat than the D colour diamond, above.
Regardless of the date, more criteria than a 'per carat' price is set for any diamond. Including the cut and its excellence, other criteria include colour, and clarity.
Every diamond is worth what someone will pay you for it. Before you sell any diamond, regardless of its colour, pay for a certificate from a certified gemologist who will rate the diamond, according to its cut, colour, carat weight and clarity. Those details will help you establish a 'fair market value' for your diamond(s).
do the math
12k gold would be worth about $487.50 per ounce.