Diamonds

The UV wavelength becomes visible based on flaws in the carbon lattice structure. As well, once the light is removed, some diamonds emit a phosphorescence that helps identify the exact source of the stone.

According to the Gemological Institute of America (GIA):

"Fluorescence is the emission of visible light by a diamond when it is stimulated by invisible ultraviolet (UV) rays. It is a common characteristic of diamonds. The diamond simply glows under the UV lights, usually a blue color, which most often stops when the energy source causing it is removed."

One interpretation of how to balance fluorescence and stone colour when valuing a stone is available through the link, below.

The four Cs for diamonds are cut, color, clarity, and carat weight. Each C represents a different aspect of a diamond's quality and value. Collectively, these factors help determine the overall beauty and price of a diamond.

Since coal and diamond are both allotropes of carbon, your challenge will be to realign the molecules. The molecular structure of coal is substantially different from the structure of diamond.

The first step could be to heat the coal to a temperature that would melt it. Since coal does not melt, but transforms by sublimation -- changing from solid to gas back to solid with no liquid state involved -- you would be defeated in the first step.

Taking another tact, no amount of pressure will realign the molecules into the diamond pattern that you seek.

Typically, real gold will be stamped with values such as 14k (14 karat), 18k GF (18k gold-filled), etc. The best way to tell; however, is to take the piece to a jeweler who has a gold testing kit or gold testing acids.

Because of its lattice structure, diamond has four directions of perfect cleavage along its crystal orientation plane (e.g. 111, 110, etc.) forming octahedrons.

Fracture is conchoidal, meaning that diamonds are brittle and when they break, the break does not follow any natural plane of separation.

Swarovski crystals are a branded type of lead crystal that is made primarily of glass and lead and may also be coated with other materials. When comparing crystals to diamonds, they are commonly referred to as a diamond simulant.

Simulants may look similar to a diamond, but do not possess the same properties.

A diamond is formed from carbon and has a hardness of 10 on the Mohs scale -- the hardest. Lead crystal is graded around 6-7, though both can scratch glass.

A genuine diamond is a natural, mined gemstone composed of carbon atoms arranged in a crystal lattice structure. It is known for its clarity, brilliance, and durability, making it a highly valued and sought-after gemstone in jewelry. Genuine diamonds are graded based on the 4Cs: carat weight, cut, color, and clarity.

They are processed by cuttin out most off the rock around it without toching the diamond. They then give it a quick magma bath to get rid of the extremities. Then they cut it down to size.

Diamonds are formed from carbon, and in this state, possess no taste or smell.

Yes, diamonds can be recycled by breaking them down into smaller pieces and using them in new jewelry pieces or industrial applications. The process involves cutting, grinding, or melting down the diamonds to create new products. Recycling diamonds helps reduce waste and environmental impact associated with new diamond mining.

No, diamonds are not used for energy production. They are primarily used in jewelry, cutting and grinding tools, and high-pressure research equipment.

Chocolate diamonds are primarily mined in Botswana in Africa. The largest diamond mine in the world, the Jwaneng Diamond Mine, is located in Botswana and is a significant source of chocolate diamonds.

A diamond can shatter if hit with a hammer.

While diamond is the hardest naturally-occurring mineral known, it is also brittle. The hardness means that it is difficult to cut, but the brittleness means that it is likely to splinter or shatter if enough pressure is exerted. In the case of a diamond hit with a hammer, the likelihood that the diamond will shatter will increase with the force of the hammer (based mostly on the weight) and will further increase if the diamond has any significant inclusions (indicated by a flaw in the diamond).

Given the value of a diamond, it is highly recommended that you do not try this at home.

Only about 20% of all diamonds mined are gem-quality, and that is the most expensive use for diamonds.

Industrial diamonds make up the bulk of all diamonds mined. These are used to improve industrial tools, making them sharper, more precise, clear and longer-lasting.

A champagne diamond is a type of colored diamond that has a light to deep brown color with hints of yellow or orange, resembling the color of champagne. This type of diamond is often valued for its unique and warm tone, making it a popular choice for jewelry design.

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The most common diamond cuts found in engagement rings are:

• Round Brilliant: Known for its exceptional sparkle due to its 58 facets.
• Princess: A square or rectangular cut with sharp corners, popular for its modern look.
• Cushion: Rounded corners and larger facets that enhance brilliance, often with a vintage appeal.
• Oval: An elongated shape that offers a unique look while retaining the brilliance of a round cut.
• Emerald: A rectangular shape with step cuts, known for its elegant and sophisticated appearance.
• Marquise: An elongated shape with pointed ends, creating a striking and distinctive look.
• Pear: A teardrop shape combining round and marquise cuts, offering a delicate and graceful appearance.
• Asscher: Similar to the emerald cut but square-shaped with deep step cuts, known for its Art Deco style.

These cuts are favored for their beauty, brilliance, and ability to complement a variety of ring settings and styles.

A clear (relative) crystal of Diamond what ever be the color,even black now-a-days that can be used in Jewellery or as a collectable maybe called a Gem diamond. Industrial diamond are usually opaque and dumb to look at!!

A diamond can be broken using a number of methods. Gem cutters study the crystal structure of diamonds and then use a hardened chisel and a hammer to cleave them.

Certainly placing a diamond on an anvil and striking it with a hammer will break the diamond. But that's a poor use of the tools and a waste of a diamond. The diamond is the hardest substance we know of, but it can be "broken" in a number of ways.

If you swallow a diamond, it will likely pass through your digestive system without causing harm. However, it is advisable to seek medical attention to ensure it does not get lodged in your digestive tract.

Glass is ground with abrasives, just like many other things we need to work on to change their shape. The optical glass used to make lenses is ground using abrasives to bring the glass into the proper shape to act as a lens or mirror.

There are lots of ground glass shapes are around us, and glasses (the kind used to correct vision) are doubtless the best example. But microscopes and telescopes also have ground glass optics in them, and we find ground and polished glass in tables, mirrors and other furnishings. In all cases, the glass was ground and polished using abrasives.

Right now the vast majority of lab grown diamonds are used for industrial purposes (drilling bits, heat sinks, etc). As far as how they are grown in simple terms...there are really two ways. Both start with an existing piece of diamond, which serves as the growth base. HPHT methods (high pressure high temperature) surround the diamond seed with a carbon infused liquid, and the carbon atoms slowly migrate to the diamond seed and assmeble themselves on the seed, and thus 'grow'. CVD (chemical vapor deposition) also uses a diamond seed but is done at ultra-low pressure and high temperature. Here, a gas rich in carbon atoms is shredded allowing the carbon atoms to escape and 'rain' down onto the diamond seed...and the carbon then grows on the seed.

i think it is 2400c but I'm not sure if that is just for carbon