Diamonds

A diamond 'gathers' light from every available source and reflects and refracts it back to the eye of the observer. Its brightness then, depends on how much available light the diamond can collect.

No, breathing on a diamond will not help you determine if it is real or not. The best way to determine the authenticity of a diamond is through professional testing by a gemologist or using specialized equipment.

Diamonds are cut and polished geometrically in order to reflect and refract light. A diamond's ability to 'twinkle' is one of the four characteristics one examines when buying a diamond: its name is cut. Others are clarity, colour and carat weight.

A tiny change in light angle, or position of the diamond, will alter the light path through the gem (caused by the gem's internal matrix and its external angles). To the observer's eye, this light will fluctuate in brightness (twinkling), as starlight does when refracted by the atmosphere.

No, for a naturally coloured diamond, and yes, for a treated diamond with enhanced colour.

Any diamond can be treated, either chemically or by radiation, to enhance its natural colour. Many naturally coloured diamonds require no treatment, because their colour is judged to be naturally ideal.

A certified gemologist can identify a naturally coloured diamond, and can also identify and describe treatments to a diamond intended to enhance its natural colour.

A red diamond can be found in kimberlite rock formations, which are volcanic pipes that bring diamonds to the Earth's surface from the mantle.

Any diamond is worth whatever someone will pay you for it.

Today, on Blue Nile, you can purchase a diamond with roughly this description and pay between US$2,392 and US$2,633, depending on the cut and excellence of the cut that you want.

Yes, some meteorites contain diamonds. These diamonds are formed under extreme pressure and temperature conditions during the impact event that creates the meteorite. However, diamonds in meteorites are usually microscopic in size.

After being mined, diamonds are sent to sorting facilities where they are categorized based on quality and size. From there, they are sent to diamond cutting and polishing centers where they are transformed into polished gems. Finally, they are sent to diamond dealers and retailers for sale to consumers.

From the DiamondWorld magazine:

"State-run mineral giant NMDC recently discovered a 37.68 carat diamond from Panna diamond mines in Madhya Pradesh, which stands as its biggest discovery till date."

You can read more, below.

Your answer depends on the material you choose to call 'diamond dust' and the situation in which you find the material.

When diamonds are cut and polished, diamond dust may be produced.

Academically, when describing the geology of diamond, one can ask about the 'streak' of diamond, where the dust of a diamond stone is removed from a diamond.

In extreme cold weather, frozen water droplets are sometimes called diamond dust.

Diamond dust may also be the trade name for some illegal drugs.

Zircon is a naturally occurring mineral that is not a diamond. Zircon is often used as a diamond substitute in jewelry due to its natural brilliance and sparkle, but it is not as valuable as a true diamond.

No, diamond cannot break obsidian. Obsidian is harder than diamond on the Mohs scale, which measures the hardness of minerals. Diamond itself is the hardest natural material, but it cannot scratch or break obsidian due to its unique molecular structure.

Your answer depends on the individual diamond.

Gem-stone quality raw diamonds are much more clear than industrial-quality diamonds.

You can see a photo of a raw, gem-stone quality diamond, and learn more about them, below.

DeBeers artificially keeps the price of gemstone quality diamond high by restricting the ammount of diamonds that are on the market. Although top quality diamonds can be grown in the lab for about 200$ per carrot, there are few companies that have the ability to take on the larger gem mining companies. In addition people seem to think that a lab grown gem is somehow worth less than its mined partner, but that's only because diamonds are overpriced in the first place and most people know nothing about chemistry.

Refraction and reflection both contribute to the sparkle you see in a diamond.

Diamonds naturally have a high refractive index, meaning they are 'light friendly'. This property makes diamonds sparkle under any available light: moonlight, starlight, flashlight, firelight and so forth.

A well-cut diamond also has reflective qualities: the diamond cutter designed the cut so that light taken in from any facet reflects on other facets and back into the eye of the beholder.

The initials CT and TW indicate carat (CT) and total weight (TW), which are both weight measurements for diamonds and other gems.

A gemologist can verify that the stones in question are real diamonds. Or not.

The famous Hope Diamond was donated to the Smithsonian Institute in 1958 by jeweler Harry Winston. Winston donated the diamond as a way to promote the diamond's mystique and to showcase it for public viewing.

The jeweler's name is Harry Winston, of New York City, New York.

Harry Winston donated the Hope Diamond to the Smithsonian Institution in 1958 by sending the gem through the U.S. mail in a plain brown paper parcel.

The Crater of Diamonds State Park is known for being the only diamond-producing site open to the public in the world. Visitors can search for diamonds and other gemstones in the park's 37.5-acre plowed field.

To measure the clarity of images, you can use metrics such as resolution (measured in pixels), sharpness (evaluating details in the image), and contrast (difference between light and dark areas). You can also perform visual inspection for clarity or use tools like image quality assessment algorithms to quantitatively evaluate image clarity.

The World’s Rarest and Most Valuable Gemstones

Due to their high values, a lot of people think that gemstones like diamonds, emeralds, sapphires and rubies are the rarest in the world. Initially, I thought this as well, but after a little research, I was amazed to learn that they’re not even close.

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In fact, there are at least a dozen gemstones far rarer and more valuable than diamonds. One thing is certain: Rarity is often a bigger factor in determining a gemstone’s value than mere looks.

Strangely, in my opinion, some of the most valuable stones are not as visually breathtaking as I thought they would be. It is important to point out that the values in this list (or any list of this nature) are not and can not be 100% accurate.

The truth is gemstones are worth whatever someone is willing to pay for them. Availability, time and the eagerness of owners to sell will all influence the sale price of gems.

I had a lot of fun putting this article together, and hope you enjoy it as well!

Poudretteite

Another stone deserving to be on our list of the 10 rarest gemstones in the world is Poudretteite. Poudretteite is a faded pink crystal. Incredibly small fragments were found in Quebec, Canada in the 1960s. The gemstone was named after the Poudrette family which owned the mine where the stone was found. Poudretteite and Taaffeite are tied for, world’s rarest gemstone, as Poudretteite also has less than 50 specimens found.

Larimar is a very rare blue variety of the mineral pectolite and is found in only one small area of the Dominican Republic. This turquoise stone’s name was created by the man who brought the stone to prominence in 1974, Miguel Méndez—he took the first part of his daughter’s name, Larissa, and combined it with the Spanish word for sea, mar, to create the portmanteau larimar. Locals had known of the existence of the stone for generations, because small examples had washed up on the seashore, but it was not until the 1970s that sufficient quantities were found in the ground to open a mine