Diamonds, in their raw, uncut form, look nothing like the dazzling gemstones set in jewellery. If you’ve ever questioned yourself “How does a raw diamond look like?”  when they are found in nature, this guide will walk you through their key characteristics, how to identify them, and where they are discovered.

Key Characteristics of Raw Diamonds

Raw diamonds often appear rough, unpolished, and unremarkable compared to the cut and faceted stones seen in jewellery. They usually have a translucent or cloudy look with an oily or waxy surface that makes them less brilliant than polished stones. Their shape is typically irregular, but some may exhibit a cubic or octahedral crystal structure. Unlike quartz or other minerals, raw diamonds have a high level of hardness and will not scratch easily. Another distinct feature is their ability to repel water while attracting grease, which is why some diamond sorting methods rely on grease tables.

Raw Diamonds vs. Polished Diamonds

The transformation from a raw diamond to a polished gemstone is remarkable. In its natural state, a diamond may look like a dull rock with no sparkle. Raw diamonds can come in a variety of colors, including white, yellow, brown, and even rare blue or pink shades. In contrast, polished precious stones go through an extensive cutting process to enhance their optical properties, clarity, and overall aesthetic appeal.

Where Are Raw Diamonds Found?

They are formed deep within the Earth's mantle under extreme heat and pressure before being brought to the surface through volcanic eruptions. They are typically found in kimberlite pipes and alluvial deposits in riverbeds, where water erosion naturally carries them downstream. Some of the most well-known diamond-producing regions include:

• Africa – Countries like Botswana, South Africa, and Angola are among the top diamond producers.
• Russia – The Yakutia region is home to some of the world’s largest diamond mines.
  
• Canada – The Northwest Territories and Ontario host significant diamond deposits.
• Australia – The Argyle Mine was famous for its rare pink diamonds before its closure.
  

How to Identify a Raw Diamond

If you come across an uncut stone and suspect it might be a diamond, there are several ways to test its authenticity:

• Hardness Test – They rank 10 on the Mohs hardness scale, meaning they can scratch nearly any material, including glass or steel.
• Transparency Check – While not completely clear, raw diamonds should allow some light to pass through but will not be as transparent as quartz.
• Density and Weight – They are denser than most common rocks, so they will feel heavier than a similar-sized piece of quartz.
  
• Water Test – Unlike glass or synthetic stones, these precious stones repel water and won’t appear wet when submerged.
  
• Grease Test – Diamonds naturally stick to grease, a method used in diamond mining to separate them from other minerals.
  

For absolute certainty, it’s always best to consult a gemologist who can conduct more advanced tests, such as ultraviolet fluorescence or thermal conductivity.

FAQs

Are raw diamonds valuable?

Yes, raw ones hold significant value, but their worth depends on factors like size, color, clarity, and quality. While they may not appear as striking as cut diamonds, a high-quality raw diamond can be extremely valuable to collectors and jewellers.

Can raw diamonds be used in jewellery?

Absolutely! Some jewellery designers specialise in using raw diamonds for a more natural, organic aesthetic. These uncut stones are often set in rings, necklaces, and earrings for a rustic yet elegant look.

How do raw diamonds form?

They are created deep within the Earth under immense pressure and heat over billions of years. They are made of pure carbon atoms arranged in a crystal lattice structure, which gives diamonds their incredible hardness and durability.

Conclusion

Raw diamonds may not shine like the ones in jewellery stores, but their natural beauty and rarity make them just as fascinating. By answering “What do diamonds look like in nature?”, recognising their characteristics, and knowing where they originate, you can better appreciate their journey from the Earth's depths to dazzling jewellery pieces.  Whether you’re a collector, a jeweller, or just a curious enthusiast, recognising a raw diamond can be an exciting and rewarding experience.