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Graphite flakes can cost around US$0.9/kg carbon. Price of synthetic industrial diamond for grinding and polishing can range from 1200 to 13 300 USD/kg, while cost per weight of large synthetic diamonds for industrial applications can be on the order of million dollars per kilogram. 7: N: Nitrogen: 0.0012506: 19 (5.263 × 10 17 kg) 0.140: 0.000 ...
It subsequently fell to US$774 per troy ounce ($25/g) in November 2008. As of 21 November 2022, the platinum spot price in New York was $980 per ounce, compared to $1,742 per ounce for gold and $20.84 per ounce for silver. Platinum is traded in the spot market with the code "XPT". When settled in United States dollars, the code is "XPTUSD".
Platinum is a member of the platinum group of elements and group 10 of the periodic table of elements. It has six naturally occurring isotopes. It is one of the rarer elements in Earth's crust, with an average abundance of approximately 5 μg /kg. It occurs in some nickel and copper ores along with some native deposits, mostly in South Africa ...
The international prototype of the kilogram (IPK) is an artifact standard of platinum–iridium alloy that was defined as having a mass of exactly one kilogram. Platinum–iridium alloys are alloys of the platinum group precious metals platinum and iridium. Typical alloy proportions are 90:10 or 70:30 (Pt:Ir).
In scientific contexts, mass is the amount of "matter" in an object (though "matter" may be difficult to define), but weight is the force exerted on an object's matter by gravity. [1] At the Earth 's surface, an object whose mass is exactly one kilogram weighs approximately 9.81 newtons, the product of its mass and the gravitational field ...
Rank Country/Region Platinum production (kilograms) Year World 180,000 2019 1: South Africa: 130,000 2019 2: Russia: 22,000 2019 3: Zimbabwe: 15,000 2019 4: Canada
The platinum-group metals ( PGMs ), also known as the platinoids, platinides, platidises, platinum group, platinum metals, platinum family or platinum-group elements ( PGEs ), are six noble, precious metallic elements clustered together in the periodic table. These elements are all transition metals in the d-block (groups 8, 9, and 10, periods ...
The following months brought a decline in platinum's price below $1,000 per troy oz, precipitating further suspensions and a final price of $1,249.95. When sales were officially ended on December 31, 2008, over a year after its initial release, the Mint reported total sales of 19,583 units.