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Since not all diamond deposits have been discovered -- or fully mined, it is not possible to answer your question with any accuracy. Diamond mines in several African countries, in Canada and in Australia are profitable enough to be considered 'rich' in the sense that they make more money than they cost to operate.
Black diamonds are a rare form and can be found in the African Republic and parts of Brazil. The cost of a black diamond engagement ring can differ depending on cut, style, and other stone settings. Front Jewelers sells black diamond engagement rings starting at approximately $1500.
The largest GIA certified black diamond available in a quick Internet search is a Fancy black, cushion cut, 7.21 carat diamond with a retail price of US$18,125. You may be able to shop longer and find a larger diamond, and the cost will be comperable to its individual characteristics.
Today black diamonds are sold for prices that are comparable to those of white diamonds.
Black diamonds generally cost less, stone for stone than a comparable white diamond. The exact price of a black diamond will depend on the size, cut, carat weight and visual desirability of the stone. A local jeweler can show you options.
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.
The money you pay for a diamond depends on its cut, clarity, carat weight and colour. You can spend several hundred dollars or several million dollars for a diamond.
If we select top qualities for a white diamond then a 1 carat round cut, H color, Si1 clarity, and excellent cut with GIA certification can cost you approximately $5258. A 1.29 carat cushion cut black diamond can cost upwards of $1,500.
Since the Koohinoor Diamond has not changed hands for money -- rather, it is classically a spoil of war or gift of occupation -- no monetary amount can be assigned to it.
a black panther cost about between 1000 and 2000 it depends
About $70.00
The pink opal cost 200,000,000