Diamonds

Diamonds are checked by a magnifying glass to inspect their clarity and to look for any imperfections or inclusions that may affect their value. The magnifying glass allows for a closer examination of the diamond's surface to reveal any flaws that may not be visible to the naked eye. This inspection helps determine the diamond's quality and authenticity.

The biggest diamond found to date -- 3,000+ carats -- is named Cullinan, named after Sir Thomas Cullinan, the owner of the Premier Mine, where the stone was found.

In complete darkness, devoid of any light -- deep within a cave, for example -- no diamond will 'shine'.

Every diamond, however, will reflect and refract ambient light, even if it is simply moonlight or starlight.

A topaz is a gemstone that can come in various colors such as yellow, blue, or pink. An emerald is a green gemstone belonging to the beryl mineral group. A diamond is a clear, colorless gemstone composed of carbon atoms. Each of these gemstones have unique qualities and characteristics.

Yes. Coloured diamonds are coloured either by the inclusion of trace amounts of another mineral mixed with carbon -- yellow comes from nitrogen, blue comes from boron -- or based on structural defects: pink.

You can read more, below, about how naturally coloured diamonds are graded, and see the rich mix of colours and combinations Mother Nature produces in diamonds.

Rosette is not a common name for a cut diamond: no raw stone will look like a rosette.

Rosette may be a style of setting, where the diamond, usually a small, round stone, is set in a carved rose.

'Rosette diamond' or 'rosetta diamond' may be a brand name, although it is not easily available as a search result.

An 83 carat diamond is a rare stone, an immensely valuable stone, and probably one of a size that no human anyone knows would have a hand large enough to wear it.

You can browse the list, below, to find large stones and see their other physical measurements which are determined by each stone's cut

The largest diamonds are typically kept in highly secure facilities such as vaults in museums, banks, or storage facilities run by diamond exchanges and mining companies. Some may also be on display in museums for public viewing.

Diamonds naturally have a very high refractive index: 2.4, and the facets cut into the stone by the diamond cutter are positioned at angles meant to increase the refraction of any light shone on the stone.

One characteristic of diamond may be its fluorescence.

From the link below:

"Fluorescence, produced by ultraviolet light from the sun, by black lighting or other long-wavelength UV source, occurs in an estimated 35% of gem grade diamonds."

there is no magnifing glass in diamond mines!

Briolette cut is used not only for diamonds, but for any precious stone. It resembles a teardrop and is layered with triangular shapes. This cut dates back to the early 1600s.

You can read more about its history, below.

The biggest diamond in the world is the Cullinan diamond, which was found in South Africa in 1905. It is the largest gem-quality rough diamond ever discovered, weighing about 3,106 carats.

Yes, diamonds can become cloudy due to a build-up of dirt, oils, and other substances. This can affect the diamond's brilliance and sparkle. Regular cleaning and maintenance can help prevent cloudiness.

Blue diamonds are rarer and more valuable than red diamonds. The presence of the boron element in blue diamonds gives them their color, while red diamonds get their color from structural defects in the crystal lattice. Both colors are extremely rare and highly prized by collectors and investors.

In absolute darkness, for example, inside a closed cave, a diamond would not be visible.

A diamond depends on a light source in order to reflect and refract light. Any ambient light, from the moon, or a streetlight or candlelight will be picked up by a diamond and cause it to shine.

No, obsidian and diamond are two different materials. Obsidian is a naturally occurring volcanic glass, while diamond is a crystalline form of carbon. They differ in composition, appearance, and properties.

The rarest form of diamond is known as the blue diamond, which gets its color from the presence of boron during its formation. Blue diamonds are highly sought after for their unique color and rarity, making them one of the most valuable and coveted diamond varieties.

'Most expensive' indicates that records of sale exist.

There are diamonds that have always changed hands otherwise, for example, as spoils of war (Kor-i-Noor, currently in the British Crown Jewels), or that were sold for money many years ago (The Hope Diamond, currently in the Museum of Natural History, Washington, DC), so even though these diamonds are most expensive, that attribute is difficult to define.

Other diamonds are gifts, for example, the Cullinan, which at more than 3,000 carats as a raw stone is the largest discovered to date. The stone was given to the King of England, Edward VII, on his birthday, with no price attached to it.

Auction records reveal, however, that over time, many diamonds have changed hands based on prices in the millions of dollars. The link below, explains.

Finally, it's understandable that whomever is the record owner may choose to remain anonymous.

Diamonds are typically formed deep within the Earth's mantle under high pressure and temperature conditions. They are brought closer to the surface through volcanic eruptions in diamond-bearing rock formations called kimberlite pipes. Miners extract diamonds from these deposits through mining operations.

The largest raw diamond ever found, the Cullinan diamond, weighed over 3,100 carats (about 1.37 pounds or 621.35 grams). It was discovered in South Africa in 1905 and was eventually cut into several smaller diamonds that are part of the British Crown Jewels.

There's no notable diamond named the Ocean Diamond, but the Heart of the Ocean Diamond -- a fictional stone from Cameron's Titanic.

According to RingEnvy -- "The one used for the film was an enormous 56-carat [stone], giving it a length of almost two inches. A cluster of smaller, colorless stones and diamonds surrounds the central gemstone as well."

Diamonds are formed deep within the Earth's mantle under high pressure and temperature conditions. They are brought to the Earth's surface through volcanic eruptions in rock formations known as kimberlite or lamproite pipes. Diamonds can also be found in alluvial deposits, where they have been eroded from these primary sources and carried by rivers and streams.