Diamonds

The Hope Diamond is a famous blue diamond known for its deep blue color and storied history, including tales of curses and intrigue.

One answer could be the inexperience of the diamond viewer. Another is that many diamonds are no bigger than a grain of rice, also their color can be missed against the natural color of the ground.

The field test for diamond is 'extreme hardness'. As well only about 25% of natural diamonds are of gem-stone quality, so the other 75% of diamonds found will not appear to possess a natural clarity or colour commonly associated with gem-stone quality rocks.

Diamonds are formed deep within the Earth's mantle under high temperature and pressure conditions. They are brought to the surface through volcanic eruptions, where they are found in volcanic pipes or kimberlite deposits. These diamond-bearing rocks are then mined and the diamonds are extracted for various uses.

Apparently, there is a jewelry grading system that includes five grades, including 'superfine', 'AAA', 'AA' and 'commercial'. This is the definition of a triple-A grade:

"AAA:-(SI1 - SI2) Or Big Bargain

This grade denotes that the product in question is clean, well cut & polished, lively color but poses variation in color consistency."

The Cullinan Diamond, found in RSA in 1906, weighing more than 3,000 carats as a rough stone, remains today as the largest rough diamond ever found anywhere.

The standard magnification for diamond clarity grading under FTC guidelines is 10x. This level of magnification allows gemologists to accurately assess the internal characteristics of a diamond to determine its clarity grade.

Yes, diamonds are considered rare because they are formed deep within the Earth's mantle under high pressure and temperature conditions. However, the availability and supply of diamonds are carefully controlled by mining companies to maintain their value in the market.

Some of the largest diamonds have been found in South Africa, particularly in the Premier Mine (now Cullinan Mine). Other notable diamond-producing countries include Botswana, Russia, and Canada. The "Cullinan Diamond," one of the largest gem-quality diamonds ever discovered, was found in South Africa in 1905.

The diamonds sparkled in the sunlight.

Diamonds may be disappearing due to various reasons such as depletion of diamond mines, lower production rates, and increased demand. Additionally, factors like illegal mining, conflicts in diamond-producing regions, and synthetic diamonds may also impact the availability of natural diamonds.

'Rare' used to describe a natural diamond describes many diamonds.

Red is generally acknowledged as the most rare natural colour in diamonds. Then, the Moussaieff Red, could be called the world's rarest diamond.

You can read more about this stone, below.

This diamond was found in 1990 and purchased by DeBeers. DeBeers is a diamond company owed by De Beers Société Anonyme, which was incorporated in Luxumbourg in 2000.

Understandably, this stone is kept by the company in a place where its location is not well known.

Read more about it, below.

Yes, diamonds are minerals formed deep within the Earth's mantle under high pressure and temperature. They are not rocks but rather crystallized carbon, known for their brilliance and hardness.

Diamonds show flashes of color due to a phenomenon called dispersion, which occurs when the white light is split into its component colors as it enters and exits the diamond. This dispersion results in the beautiful display of colors, also known as fire, that diamonds are known for.

Diamonds are typically considered the most precious gemstone due to their rarity and strong market demand. They are valued for their brilliance, hardness, and enduring beauty.

Diamonds belong to the cubic crystal system. This means that diamonds have a symmetrical cubic structure with three axes of equal length that intersect at right angles. This gives diamonds their characteristic symmetry and hardness.

Geologists identify areas in the earth where volcanic pipes exist that contain 'diamond indicators', including kimberlite.

Then, diamond miners mine the area for diamonds, usually using industrial-strength mining equipment.

No, seeing a circle through a large diamond does not necessarily mean it is fake. Sometimes the facets of a diamond can refract light in a way that you can see through it. To determine if a diamond is fake, it's best to have it examined by a professional jeweler who can assess its authenticity.

No, not if the diamond is on earth, and not closer to the sun.

Probably a red diamond, since it is the most rare natural colour.

The largest diamond in the world is the Cullinan diamond, which was discovered in South Africa in 1905. The Cullinan diamond weighed 3,106 carats in its rough form and was later cut into several smaller diamonds, with the largest finished diamond known as the Great Star of Africa weighing 530.2 carats.