Jewellery School

Bevilles Jewellery School 101 is your guide to diamonds, gemstones, and precious metals.

Two diamond rings, one labeled 'Lab Grown Diamond' and the other 'Mined Diamond', on a white background.

Lab-Grown vs Mined Diamonds

Same sparkle. Same composition. Different origin. So what’s the difference?

A diamond is simply crystallised carbon. Whether it comes from the Earth or a laboratory, the material is the same—which means both lab-grown and mined diamonds:

  • Look the same
  • Sparkle the same
  • Have the same hardness and durability
  • Are chemically and optically identical

How Mined Diamonds Form

Mined diamonds are created naturally:

  • Formed deep underground under extreme heat and pressure
  • Take billions of years to develop
  • Brought closer to the surface through volcanic activity
  • Extracted through mining

Because of this long natural process, mined diamonds are often seen as rare and carry strong traditional or emotional significance.

How Lab-Grown Diamonds Form

Lab-grown diamonds are created using advanced technology that replicates natural conditions:

  • A small diamond “seed” is placed in a controlled chamber
  • Carbon layers build around the seed
  • The diamond grows over several weeks
  • The result is a real diamond, created in a modern environment
Gold ring with a diamond on a hand against a neutral background

How to Compare: Lab-Grown vs Mined Diamonds

Price & Value

  • Mined diamonds are generally more expensive due to rarity and extraction costs
  • Lab-grown diamonds are more affordable and produced on demand
  • Mined diamonds often retain resale value better
  • Lab prices continue to decrease as technology improves

Common Misconceptions

  • Lab-grown diamonds are real diamonds (not imitations)
  • You cannot tell them apart with the naked eye
  • Both can be certified and graded the same way
  • Both may contain small imperfections

Choosing What’s Right for You

It comes down to priorities:

  • Value, size, and sustainability → Lab-grown
  • Tradition, rarity, and long-term value → Mined
  • Same beauty and durability → both

Either way, you’re choosing a real diamond designed to last a lifetime.

SHOP ALL DIAMONDS
Diamonds being held by tweezers on a wooden surface with other diamonds scattered around.

What is a Diamond?

Despite the popular myth, diamonds are not formed from coal. Most diamonds are actually older than plant life on Earth itself—by around 2 billion years.

A diamond is 99.95% Pure Carbon and is 58 times harder than anything else in nature.
Diamonds form when pure carbon is subjected to extreme heat and pressure deep within the Earth’s mantle, around 150km below the surface. Over time, volcanic activity brings them closer to the surface where they can be mined.

World map with red markers indicating locations on a beige background

Where Do Diamonds Come From?

Diamonds was first found in India in the 4th Century. India remained the only source until 1730's.
Diamonds are found in mines across the world. Major sources include:
Canada, Australia, and Several African nations like, Botswana and Namibia.

Because diamonds form naturally in the Earth’s crust, they can technically be found in many regions globally.

Responsible sourcing is also a key part of the modern diamond industry. At Bevilles, we source mined diamonds that requires certification from suppliers and complying with the Kimberley Process, which helps prevent conflict diamonds from entering the market.

SUSTAINABILITY AT BEVILLES
Diamond grading chart with color, carat/weight, and clarity ratings.

How Diamonds Are Classified: The 4Cs

Cut

Cut determines how well a diamond reflects light. A well-cut diamond maximises brilliance (brightness) and fire (colour flashes), while a poor cut can look dull even if the stone is large. Common styles include round brilliant, princess, and emerald.

Colour

Colour refers to how colourless a diamond is. It is graded from D (colourless) to Z (noticeable tint)—the less colour, the higher the value. Diamonds can also naturally appear in shades like yellow, brown, blue, pink, and more.

Carat

Carat measures a diamond’s weight, not size. 1 carat = 0.2 grams. Larger carat usually means higher price, but cut affects appearance—well-cut smaller diamonds can look larger than poorly cut big ones.

Smaller diamonds set together are measured as TW (Total Weight), which refers to the combined carat weight of all stones in a piece of jewellery.

Clarity

Clarity measures internal and external imperfections. Flawless diamonds have no visible inclusions, while Included diamonds show visible imperfections. Common inclusions include feathers (cracks), graining (lines), cavities (mineral spots), and bearding (fuzzy edges).

Diamond Shapes Explained

Shape affects both style and sparkle. Popular options include:

  • Round – classic and most brilliant
  • Princess – modern square shape
  • Cushion – soft square with rounded edges
  • Emerald – rectangular with elegant “hall of mirrors” sparkle
  • Marquise – elongated with pointed ends
  • Oval – similar brilliance to round but more unique
  • Pear – teardrop-shaped elegance

Each shape interacts with light differently, influencing overall sparkle and personality.

JEWELLERY CARE & FIT

Grid banner 1 Bevilles skincare and grooming products including a bamboo toothbrush, black bottles, and a pouch on a white background.

HOW TO CARE FOR YOUR DIAMONDS

Grid banner 2 Bevelles ring on a red background with the brand name displayed.

READ ABOUT OUR CARE PLAN

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HOW TO FIND YOUR RING SIZE

Lab Grown vs Mined Diamonds explained by melissanapoli89