Whatever you have to sell is worth what someone will pay you for it.
Best practices dictate that you take your diamonds to a certified gemologist and pay for documentation for each diamond, according to each's cut, colour, clarity and carat weight. Then you will be better able to establish a market price for them.
Natural diamonds can be industrial diamonds or gemstone quality diamonds. Gemstone quality diamonds are worth more than industrial diamonds. If by 'industrial', you mean man-made, then a natural diamond will always be more valuable than a man-made diamond of equal carat weight, unless the natural diamond is not of gemstone quality.
A diamond is worth whatever someone will pay you for it.
Once the diamond reaches the end consumer it is worth the same as any other comparable diamond. You wouldn't be able to tell it was a blood diamond by looking at it because the blood diamonds come from the same mines as legitimate diamonds. The miner might receive $50.00 if they find a diamond.
A diamond is worth what it's worth, regardless of where and how it's set in jewelery. A diamond's worth depends on its carat weight, its colour, its cut and its clarity.
When a diamond is cut, the dust is collected and used to polish diamonds.
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 diamond is worth whatever someone will pay you for it. Depends on the diamond. A diamond's value is determined by carat, color, cut and clarity. There are many grades of diamonds from industrial grade to Flawless, gem quality.
Because diamonds are worth a lot of money and help boost that country's economy.
5 dollars
As with all diamonds, they are all independently worth something. Jewelers will look for the three C's in determining the worth of the diamond. They measure the Cut, Clarity, and Carat weight of the diamond to determine its value.
The value of 1.45 carats of diamonds will depend on weather you have one single diamond or more. Do you have 145 diamonds with a total weight of 1.45 carats or 2 0.5 carat diamonds and a 0.45 carat diamond? Large diamonds are many many times more valuable than small ones and a single 1.45 carat diamond will be worth far more than tree diamonds with a total carat weight of 1.45 carats
According to the attached advert, Wellington diamonds are 'pretty good' fake, counterfeit diamonds. It's probably worth what someone will pay you for the Wellington diamond ring.