Any diamond is worth whatever someone will pay you for it.
Today, on Blue Nile, you can purchase a diamond of about this carat weight and pay between US$16,593 and US$335,713, depending on the cut, colour of colourless, clarity and exact carat weight that you want.
Take your diamond to a certified gemologist and pay for a certificate to verify its characteristics, which will help you establish a fair market price for it.
A round diamond of this measurement weighs about .03 carats. Your local jeweler may have one for sale. The smallest weight diamond you can purchase today on Blue Nile weighs .23 carats and will cost US$272.
Your 900 pound diamond is worth whatever someone will pay you for it. Since diamonds are not weighed in pounds, but in carats, and since a one carat diamond will cost you between US$2,023 and US17,915 on Blue Nile today, and since a one carat diamond weighs 0.00705479239 ounces, you can calculate the range of prices you can ask for your 900 pound diamond.
Diamonds are measured in CARATS. Purity of gold is in KARATS. A 14 carat diamond would be an extremely large diamond- about the size of a marble. Value is based on carat weight, cut, color, and clarity- but that would be a multi-million dollar stone in all likelihood. But I think you are looking at marking of the metal.
The diamond either weighs 100 points, or a full carat, or it weighs 80 points or 80/100ths of a carat.
There are 5 carats per gram. The answer is then 3/5 of a gram, or 0.6 grams.
Carats is a weight measurement for diamond, so your answer depends on how much your diamond weighs. Karats is a purity measurement for gold. Carrots grow in your vegetable garden.
A round diamond of this measurement weighs about .03 carats. Your local jeweler may have one for sale. The smallest weight diamond you can purchase today on Blue Nile weighs .23 carats and will cost US$272.
Today, on Blue Nile, the smallest diamond weighs .23 carats and is available for US$270.
The raw diamond of 19.5 carats weighs about 3900 milligrams. Remember, though that raw, gem-quality diamonds can lose about 60% of their weight when cut and polished.
The heaviest diamond in the world is the Cullinan diamond, which weighed 3,106 carats (around 1.37 pounds) in its rough form before being cut into multiple diamonds. The largest cut diamond from the Cullinan diamond, the Cullinan I or Great Star of Africa, weighs 530.2 carats.
Your 900 pound diamond is worth whatever someone will pay you for it. Since diamonds are not weighed in pounds, but in carats, and since a one carat diamond will cost you between US$2,023 and US17,915 on Blue Nile today, and since a one carat diamond weighs 0.00705479239 ounces, you can calculate the range of prices you can ask for your 900 pound diamond.
A single diamond weighing 38 carats will be more valuable than a collection totaling 38 carats. Every diamond is valued by its colour, clarity, cut and carat weight. Without a gemologist's certificate for each gem -- which you can pay for -- your diamonds are worth whatever someone will pay you for them.
Any diamond is worth what someone will pay you for it. In your case, 23 carats is a large diamond. Best practices dictate that you take the diamond to a certified gemologist who can ascertain its cut and clarity -- you have its carat weight and colour -- and give you a better idea of its potential market value. For example, the largest diamond that you can buy today on Blue nile weighs 22.49 carats, J colour, VVS2, and is a Very good Emerald cut. You can buy it for US$1,108,751.
A two-millimeter diamond -- round brilliant cut, measured across the girdle -- weighs about .03 carats, and as a loose stone may cost you less than US$100, depending on its colour and clarity. Your diamond would cost less given its smaller size.
Without a decimal point, it's difficult to understand how much you want your diamond to weigh. You can purchase a diamond today at Blue Nile that weighs up to .25 carats, and spend less than US$1,000.
Today, on Blue Nile, the largest Flawless diamond in the range of 10 carats weighs 7.57 carats and is priced at US$1,382,896. If you are willing to settle for Internally Flawless, you can purchase a 10.41 carat diamond and pay US$465,062. Both are D colour.
The Jonker Diamond is a name given to many finished gemstones cut from a raw diamond weighing 726 carats, beginning in 1936. The smallest of these weighs 8+ carats. There was an 'opening loss' of 1.57 carats on the first cleavage, however. No history remains tracking this loss. Each finished gemstone may or may not have a sales history. You can read more, below.