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In 1959–1961 Great Britain Atomic Energy Authority produced 125 g of 99.9% pure protactinium at a cost of $ 500 000, giving the cost of 4 000 000 USD per kg. [44] Periodic Table of Elements at Los Alamos National Laboratory website at one point listed protactinium-231 as available from Oak Ridge National Laboratory at a price of 280 000 USD/kg.
The weight of a diamond is one of these variables that determines a diamond’s worth and is what the general public is most familiar with. The unit of measurement, called the carat, equals 200 ...
Cost: $5 million per gram Red diamonds are the rarest version of colored diamonds in the world, with no specimens at all being presented to the Gemological Institute of America for grading from ...
Diamond-weighing kit, with weights labelled in grams and carats. The carat (ct) is a unit of mass equal to 200 mg (0.00705 oz; 0.00643 ozt), which is used for measuring gemstones and pearls.
The investment parameter of diamonds is their high value per unit weight, which makes them easy to store and transport. A high-quality diamond weighing as little as 2 or 3 grams could be worth as much as 100 kilos of gold. This extremely condensed value and portability does bestow diamonds as a form of emergency funding.
This is a partial list of the largest non-synthetic diamonds with a rough stone (uncut) weight of over 200 carats (40 grams). [1] The list is not intended to be complete—e.g., the Cullinan (formerly Premier) mine alone has produced 135 diamonds larger than 200 carats since mining commenced.