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Understanding the Formation of Raw Diamonds - New World Diamonds - fine jewelry, engagement rings and great gifts

Understanding the Formation of Raw Diamonds

Diamonds have long been captivating the imagination of humans. They ooze exquisite beauty and rarity. But have you ever wondered how these precious gemstones, known for their brilliance and durability, came into existence? The formation of diamond roughs is a fascinating geological process that takes place deep within the Earth. In this blog, we will talk about the intriguing journey of a diamond from its humble beginnings to its transformation into a valuable gemstone.

How to Identify a Raw Diamond or What do Raw Diamonds Look Like?

Raw diamonds are also known as rough diamonds. They exhibit a distinct and uncut appearance. In their natural state, these gemstones appear quite different from the polished diamonds used in jewelry. If you are wondering how to identify a rough diamond, it is quite easy. Raw diamonds generally have a rough, jagged texture that often resembles pebbles or crystalline rocks. They come in various colors. Their surface may appear cloudy or opaque due to inclusions, which are removed during the cutting and polishing process.

The Basics of Diamond Formation

Diamonds are formed deep within the Earth. It is formed approximately 90 to 120 miles below the surface. The process begins with carbon atoms, the same element that forms the basis of all life on Earth. These carbon atoms are subjected to extreme heat and pressure conditions.

Carbon Origin

The carbon that becomes diamonds can come from a variety of sources. One common source is ancient organic material, such as plant and animal remains. These remains have been buried and subjected to heat and pressure over millions of years. This carbon-rich material is transported deeper into the Earth’s mantle by the movement of tectonic plates.

The Formation Process

Heat and Pressure:

Once the carbon-rich material reaches the appropriate depth, it is exposed to high temperatures and immense pressure. These conditions cause the carbon atoms to rearrange their atomic structure, forming a crystal lattice that is the basis of a diamond.

Volcanic Activity:

The next stage in the formation process is the upward journey of the raw diamonds. This occurs when volcanic activity, in the form of volcanic pipes or conduits, brings the diamonds closer to the Earth’s surface. The kimberlite pipes, created by these volcanic eruptions are known to contain raw diamonds.


As the raw diamonds make their way to the Earth’s surface, the volcanic rock that contains them cools down rapidly. This solidifies the diamonds within. This sudden cooling is a crucial factor in preserving the diamond’s crystal structure, as it prevents the carbon atoms from reverting to their original state.

Erosion and Exposure:

Over millions of years, the surface layers of the Earth are eroded away, exposing the diamond-containing kimberlite pipes. Miners then extract the diamond-bearing rocks and process them to extract the diamonds.

Rough diamonds reviews are quite good. They are sought after by many. It is priced high in the diamond market. Pictures of raw diamonds in rock are quite popular on the internet. People often search for pictures of raw diamonds in rock for several reasons. The formation of diamonds is a testament to the incredible forces and time scales at work within our planet. From humble carbon atoms deep in the Earth’s mantle to dazzling gemstones we adore, the journey of a diamond is a remarkable story of nature’s artistry.

It is worth noting that even though diamonds are precious and beautiful, their value extends far beyond their appearance. They offer a glimpse into the Earth’s geological history, showcasing the power of heat, pressure, and time. The next time you admire a sparkling diamond, you can also appreciate the geological marvel that made it possible.

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