Diamond Terminology
What is a Rough Diamond?
A rough diamond—often called an uncut or raw diamond—starts its journey straight from the earth. Freshly mined and untouched by any processing, it remains in its natural form, without the sleek polish of a finished gem. Instead, expect a tough, uneven surface that hints at the raw power hidden inside.
What is a Cut Diamond?
At its core, a cut and polished diamond is a rough diamond transformed by expert cutting and polishing techniques. This process turns the raw material into a stunning gem, revealing its inherent sparkle and unlocking its full market value.
Rough Diamond Vs Cut Diamond
Cutting a rough diamond greatly boosts its value by revealing the stone's natural shine and fire. The precise facets and smooth polish that result make it more attractive to buyers, increasing both its demand and overall worth.
Key Features That Shape Rough Diamonds
To make informed choices in the rough diamond market, evaluate each stone—start by focusing on four essential factors: clarity, color, shape, and transparency.
1. Clarity
Clarity measures the number of natural flaws—known as inclusions inside the stone and blemishes on its surface—in a rough diamond.
These tiny marks are usually hidden from plain sight and only show up under a microscope. Rough diamonds with fewer of these flaws let more light pass through, making them look brighter and more lively.
At KimberLite, we specialize in high-quality Gem-Grade Diamonds, focusing on stones with exceptional clarity to ensure strong value for investors, including;
Flawless (FL): The rarest of the rare—no inclusions or blemishes at all, even under 10x magnification. This means the diamond is as pure as nature gets, letting light flow through without any interruption for maximum sparkle.
Internally Flawless (IF): Perfect on the inside with no inclusions visible under 10x magnification, though minor surface blemishes might exist. It's like a flawless core wrapped in a stone that's nearly pristine, offering excellent clarity with just a touch of outer character.
Very, Very Slightly Included (VVS1 - VVS2): Tiny inclusions that are extremely hard for even an expert to spot under 10x magnification—VVS1 is the cleaner of the two. These subtle flaws do not dim the diamond's brightness, keeping it looking crisp and vibrant.
Very Slightly Included (VS1 - VS2): Noticeable inclusions to a skilled eye under 10x magnification, but they are small and do not affect the overall appearance—VS1 is slightly better than VS2. The stone still shines beautifully, balancing purity with a bit of natural story.
2. Color
In the world of rough diamonds, color plays a key role in both beauty and worth. These stones can appear from completely colorless to shades of yellow or brown.
What causes these differences? Trace elements within the diamond or tiny structural flaws often create the hues. The stronger the color intensity, the more it can influence how the diamond looks and its overall value—making it a simple yet fascinating factor for buyers to consider.
KimberLite sources the finest rough diamonds in colors ranging from D to H, ensuring top quality for every eDiamond.
3. Shape
Rough diamonds emerge from the earth in distinct crystal shapes that directly affect their market value as it influences how much polished diamond can be recovered during cutting.
Common shapes include the Octahedron, which looks like two pyramids joined at their bases and often yields high-quality round brilliants with minimal waste; the Dodecahedron, a more blocky twelve-sided form that's versatile for various cuts; Macles, twinned crystals resembling a butterfly that can lead to more cutting challenges and lower yields; and Freeform/Irregular (Cleavages), flattened pieces along natural planes that suit simpler shapes but may show more inclusions.
By recognizing these forms, new investors can better assess a rough diamond's potential return on investment.
4. Transparency
Transparency measures how much light passes through a rough diamond. This simple factor influences the stone's clarity and its future sparkle after cutting. Rough diamonds with high transparency tend to have fewer internal flaws, or inclusions, which boosts their appeal and value in the polished market.
Fancy Colored Diamonds: Beauty and Rarity
Many people picture diamonds as clear or white stones, like those in classic engagement rings, but the diamond world offers much more variety. Fancy colored diamonds stand out as rare gems with striking colors that draw the eye.
While most diamonds are colorless, these come in shades like blue, pink, yellow, and green, which boosts their value and appeal in the market.
Their scarcity drives up prices well above those of standard colorless diamonds. The pink fancy colored diamond remains the standout favorite, consistently achieving the market's peak values.
Fancy colored diamonds form when trace impurities, such as nitrogen for yellow or boron for blue, interact with carbon atoms under extreme heat and pressure deep in the Earth, resulting in rare, vivid hues.
Kimberley Process Certificates (KPC)
The Kimberley Process Certification Scheme (KPCS), launched in 2003, is an international agreement that ensures rough diamonds are conflict-free by requiring export certificates from participating countries before they can enter global trade.
It was formed in response to growing concerns over "conflict diamonds"—also known as blood diamonds—that funded brutal civil wars in parts of Africa, a crisis spotlighted by the 2006 film Blood Diamond starring Leonardo DiCaprio.
Designed specifically to halt the flow of these illicit gems, the KPCS traces its roots to a 2000 United Nations General Assembly Resolution 55/56, which urged global action to break the link between diamonds and armed conflict.
Under the scheme, individual governments issue the certificates after verifying the diamonds' origins, with the UN providing ongoing endorsement to support legitimate trade while protecting communities from exploitation.
Gemologist: The Diamond Detective
A Gemologist is a trained expert who carefully examines diamonds to assess their quality, authenticity, and value, much like a detective piecing together clues from a gem's unique story.
In the inspection process, they start with a close visual check under a loupe or microscope to spot inclusions, surface marks, and any telltale signs of treatment or synthetic origins, often using UV light to reveal fluorescence.
Next, they evaluate the four key traits—known as the 4Cs: measuring the Carat weight for size, grading the Cut for how well it sparkles, assessing Color from colorless to tinted, and checking Clarity for internal flaws under 10x magnification.
This methodical approach ensures buyers get a clear, reliable picture of what they are investing in.