Please visit a jeweler and ask to be shown congac diamonds that match your diamond.
Then, you'll have an idea about the general value of your diamond. Every diamond is valued individually, by its cut, clarity, colour and carat weight. There is no standard.
Diamonds are measured in carats, which is a unit of weight equal to 200 milligrams. This weight measurement is used to determine the size and value of a diamond.
A 0.39 carat diamond is considered small to medium in size. It is most commonly used in small accent stones in jewelry pieces or as a center stone in delicate engagement rings. The actual physical size of the diamond would depend on its cut, with a well-cut diamond appearing larger than a poorly cut one.
A natural diamond is one that is mined from the earth. One that is grown in a laboratory would not be a natural diamond.
"Mocha diamond" is a trade term for a brown diamond. While brown diamonds can come in various sizes, the term "large" is subjective. Brown diamonds can be found in sizes ranging from small to very large, depending on the specific stone.
Only Diamond is as hard as diamond, and if their could be any gem stone as hard as diamond then it would definitely be Diamond.
Diamond worth depends on a number of factors such as cut clarity and colour. Only seeing the diamond would allow valuation.
Carat is the measurement of a diamond's weight. The stone's value would partially depend on its carat weight.
Diamonds value depends upon its 4 cs. Clarity, colour, cut and carat. In general a 10 cents diamond would cost around US$100 ( VVS clarity, E colour, and excellent cut)
Everything about a diamond is unique and individual. Every diamond is valued by its cut, clarity, carat weight and colour. Your answer would depend on the individual stone.
The largest raw diamond found to date is the Cullinan Diamond, and if its cut and polished components were available for sale -- they are not -- you would probably pay the most for this collection.
The term 'genuine, clean diamond' implies a generalist's description of what a gemologist would term 'natural, acceptably flawed diamond'. The term 'regular diamond' is as descriptive as 'regular human'. Any diamond is worth what someone will pay you for it.
A melee diamond is worth what ever someone will pay you for it. Without endorsement, you can review the site prices, below, to determine how much you would pay if you wanted to buy one or more.
Instruments fitted/studded with higher quality of diamonds in small size can only be used for diamond cutting.
It is worth about $13, if it were a rookie sensations card it would be worth about $250.
Any diamond is worth what someone will pay for it. This diamond can be valued for its cut, clarity, carat weight and colour, and the provenance would then be added to the diamond's value. There is no published value available yet for this piece, and practically, no confirmation that such a gift ever really existed.
The value of a diamond is determined by the 4 Cs: carat weight, cut, color, and clarity. A diamond the size of a grain of rice would likely be less than 0.01 carats, which is considered a melee diamond. Melee diamonds are typically lower in value due to their small size and are often used as accent stones. Therefore, the value of a diamond this size would depend on its specific characteristics, but it would generally be on the lower end of the price scale.
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.