Diamonds formed by Mother Earth, deep within the earth's mantle are larger simply because Her resources are so much greater than any human can duplicate in a laboratory.
'Expensive' diamonds are only available in about 20% of all diamonds mined, the remainder being industrial diamonds. Of that 20%, only a few stones are large enough, clear enough, colorful enough or flawless enough to be sold as 'expensive' diamonds.
One gram equals five carats -- carats being the preferred weight measurement for diamonds. When you do the math, you'll find that 8.8 grams of diamonds equals 44 carats.
PPE is important in the laboratory because it helps to prevent you from experiencing the harmful effects of chemicals being handled.
nothing :improved: depends on how the diamonds being used. A diamond can only be cut by another diamond, a diamonds weakness is fire. When you set a diamond on fire it's gonna burn up and what you're left with is a pile of carbon.
Diamonds are formed from carbon, which is also the base mineral of coal: written another way, both are allotropes -- elementary substances -- of carbon. The difference is in the arrangement of the carbon atoms, with diamonds being examples of an extremely rigid lattice.
Mother Nature fabricates diamonds deep within the earth's mantle under extreme pressure and ultra-high heat. This is a secret process, Mother Nature being who she is. In a laboratory, high heat and extreme pressure are employed to fashion multiples of eight carbon atoms into the structure of a cube.
Diamonds are not necessarily disappearing. Diamonds are being mined all over the world, every day.
Blood diamonds gain that name from being traded in underground or black markets in order to fund mayhem against humans, civil war, terrorism and so forth. Every country has laws prohibiting such mayhem and trade that funds such criminal acts.
The question assumes you're asking when do diamonds stop being described as total weight. One description of a diamond is its carat weight. Individual stones each have a carat weight. When smaller stones are clustered or installed in jewelery, especially in an attempt to make the cluster appear like a larger, single stone, the cluster is often described as [diamonds] tw or total weight. Diamonds stop being identified as tw when each diamond is weighed individually.
There doesn't appear to be any active plan or program to conserve diamonds.
Well, they are woth something, the specific answer being specific to the individual piece of jewelry. In general, larger diamonds are rarer and thus more valuable, so a cluster containing larger diamonds is generally worth more per carat than one with smaller diamonds, and not as much as one single diamond of that same weight. Diamonds really need to be over a carat in weight before they have a significant resale value. Most places that buy inexpensive clusters from the public will probably offer 100.00 a carat or less.
Diamonds
Genetics...
The Homestake Mine is Located in Lead, SD. It started in the late 1800's and operated through the late 1990's. Barrick Gold, who owned the mine at the time of closure, handed the mine properties over to the State of South Dakota and the deep underground portions of the mine are currently being developed for a deep underground research laboratory (Sanford Underground Science and Engineering Lab).
The Kimberley process was created to try and stop conflict diamonds.
All other measurements being equal, two diamonds of the same clarity, carat weight and cut, one being white and the other being brown, you'll pay more for a white diamond. Brown diamonds are the most common colour of diamond found, and one shade of this colour is called chocolate.
No volcano produces diamonds. Diamonds are erupted to the surface of the earth through volcanic pipes, which look like upside-down volcanoes. These pipes erupt indicator minerals, some of which include diamonds.