Diamonds

Since not all of the diamonds in the earth have been unearthed, it is not possible to post a number that has any validity.

Natural red diamonds, however, are the most rare of naturally coloured diamonds.

Synthetic diamonds have been created as substitutes for natural diamonds in materials where hardness and cutting ability is strongly desired.

Definitions are in order:

SYNTHETIC - like Dolly the sheep, a synthetic is real and exactly the same as a natural gem with one exception. It was created in a lab and not naturally occuring and recovered from the earth. At this date, most jewelers even using all the best test cannot tell the difference between man made diamonds and natural diamonds without expensive and costly equipment. A simple pen sized diamond tester can instantly let you know a cubic zirconia is not real. Additionally Cubic zirconia of the same dimensions weigh much more than diamonds. Cubic zirconia can be scratched by a diamond but a diamond cannot be scratched by a cubic zirconia.

If you met the woman who was the first test tube baby born in the 1970's, she is a "synthetic". A blow up doll is a "simulant".

SIMULANT - a substitute that is a completely different substance not like the natural and not like the Synthetic. There was once a puppet on TV called Lamb Chop. It is meant to represent a sheep but it is not real. Cubic Zirconia is a man made gem that can fool many people but is not a diamond.

To answer the questions all diamond synthetics are made of carbon, pure carbon just like a natural diamond.

For simulants the materials they may be made from are varied from glass to moissanite to cubic zirconia.

Yes, diamonds found in America are natural stones.

Although graphite and diamond are both formed from carbon, the physical structure of the electrons for each is different from the other.

Diamond atoms are packed more tightly than are atoms in any other mineral, making them (more or less) clear -- there is no response to external stimulus, such as electricity that 'moves' the atoms.

Graphite atoms are structured differently, allowing electrons to move: graphite conducts electricity. This makes graphite not clear.

Here's a more technical explanation from Wikipedia:

"Graphite is able to conduct electricity, due to delocalization of the pi bond electrons above and below the planes of the carbon atoms. These electrons are free to move, so are able to conduct electricity. However, the electricity is only conducted along the plane of the layers. In diamond, all four outer electrons of each carbon atom are 'localised' between the atoms in covalent bonding. The movement of electrons is restricted and diamond does not conduct an electric current. In graphite, each carbon atom uses only 3 of its 4 outer energy level electrons in covalently bonding to three other carbon atoms in a plane. Each carbon atom contributes one electron to a delocalised system of electrons that is also a part of the chemical bonding. The delocalised electrons are free to move throughout the plane. For this reason, graphite conducts electricity along the planes of carbon atoms, but does not conduct in a direction at right angles to the plane."

One carat (1.00 carat) weighs about .02 grams, and what you want is an example of something that weighs .15 carats.

Any US paper bill (currency) weighs one gram. So if you cut the bill into fifths, you'd have a strip of currency that weighs one carat. Then you'd cut the strip again into 20 equal pieces. Three of the remaining pieces will weigh .15 carats.

You're asking about carats, not carrots.

Carats are units of measure used to weigh precious gem stones, including ruby and diamond. One carat weighs about .20 grams.

The hardness of a diamond is a physical property because it pertains to the material's ability to withstand scratching and abrasion. It is determined by the structural arrangement of its atoms and the strength of its covalent bonds.

The value of a 2.789 carat European round cut diamond can vary depending on factors like the diamond's quality, color, clarity, and overall market conditions. In general, European round cut diamonds are known for their brilliance and may command a higher price compared to other diamond cuts. It's best to consult with a professional jeweler or appraiser for an accurate valuation.

It would be transformed into opaque black carbon. You don't even need the sun to burn up a diamond, an oxy-acetylene torch will destroy it.

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No. But it will become something else for sure. it may just vaporize before even reaching its destination.

Gemological tests, such as magnification under a microscope, thermal conductivity, and measuring a diamond's specific gravity, are commonly used to determine the authenticity of a diamond. Additional tests like using ultraviolet light to check for fluorescence and conducting advanced spectroscopic analysis can further confirm a diamond's authenticity. It is also essential to have a reputable gemologist or gemological laboratory conduct these tests for accurate results.

Carat for carat, no gem is more expensive than a diamond, given a superior cut, clarity and colour classification.

Other gems can be more expensive than diamonds when the diamonds lack top qualities.

False. Diamond and quartz are minerals composed of multiple elements. Diamond is composed of carbon atoms, while quartz is composed of silicon and oxygen atoms.

The natural process that formed most diamonds requires that a "collection" of carbon is gradually placed under great pressure and substantial (but not too high) a heat, in the absence of oxygen, for many thousands of years. The site of their formation is within the upper mantle of the Earth, under the continental crust, and the resulting diamonds have ages between 1 and 3.3 billion years.

There are also diamonds formed almost instantaneously by asteroid or meteor impacts, or manmade diamonds formed using very high compression. These "nanorod aggregate diamonds" are harder than normal diamonds, the manmade ones even more so.

There are black diamonds called "carbonado" diamonds that may have formed within supernovas, or may have formed when the already concentrated carbon material impacted on Earth.

of course, diamonds are expensive , you can sell it and get a lot of money

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.

Usually diamonds are loose, hard, heavy individual stones and are free from any surrounding material. However, there are kimberlite stones, for example, that contain embedded diamonds.

When a diamond is embedded within another material, tools used to crush the material are calibrated so that only the non-diamond material is broken away from the diamond.

Diamond and graphite have different structures which account for their different properties. Graphite is arranged into sheets which are easily removed. Diamond, on the other hand, is a network solid that has very strong bonds and intermolecular forces holding it together.

A deep cut diamond can appear smaller and less brilliant than a well-cut diamond because light escapes through the sides instead of reflecting back. Well-cut diamonds are generally considered the best as they maximize sparkle and brilliance by reflecting light back through the top of the stone.

Recently, Beyonce received an 18 karat diamond, thought to be 'flawless' for which it is rumoured, her husband paid 2.5 million Pounds Sterling. Her stone appears to be an emerald cut and the cut shows off its high quality.

You may expect to pay a little less for a round brilliant stone with VVS2 flaws.

NV on a gold ring likely stands for "Not Verified." This marking indicates that the gold content or authenticity of the ring has not been verified by a reputable authority. It is advisable to have the ring appraised by a professional to determine its quality and value.

A diamond is composed of carbon. Diamonds are made from bands of carbonaceous rock, deep within the Earth, under very great pressures and temperatures. Some diamonds (called eklogitic diamonds) have evidently formed from organic carbon that was compressed and subducted under a continental plate.

A two carat round brilliant cut stone will measure about 8.2 mm. A different cut will have a different measurement.