LAB GROWN DIAMOND GUIDE

Every Gleam Adorn lab grown diamond is a real, independently certified diamond. This guide answers the questions buyers ask most, so you can choose with confidence.

THE 4C's AT A GLANCE

The 4Cs are cut, color, clarity and carat: the four qualities that grade every diamond. Cut decides sparkle, color how white it looks, clarity how clean it is inside, and carat its weight.
CUT

How well facets return light. The biggest driver of sparkle.

COLOR

How white it looks. D is colorless, Z is light yellow.

CLARITY

Tiny inclusions inside. VS2 and above are usually eye clean.

CARAT

Weight, not size. One carat is 200 milligrams.

WHAT ARE LAB GROWN DIAMONDS?

Lab grown diamonds are real diamonds created in a controlled laboratory instead of being mined. They have the same chemistry, hardness and sparkle as mined diamonds.

There are two common growing methods. HPHT (high pressure, high temperature) copies the heat and pressure of the earth's mantle around a tiny diamond seed. CVD (chemical vapor deposition) grows the crystal layer by layer from carbon-rich gas, using far less pressure.

Both produce pure crystallized carbon, rated 10 on the Mohs hardness scale. Each rough crystal is then cut and polished like a mined stone, and graded on the same 4Cs scale by independent labs.

DIAMOND SHAPES

Shape is the outline of the diamond, and it is a matter of taste. Round is the classic; oval, emerald, pear, cushion and radiant each give a different look.

Shape is not the same as cut. Cut is how well the diamond sparkles. Elongated shapes like oval and pear tend to look larger for their weight, while step cuts like emerald have a clean, glassy look.

CUT

Cut is how well a diamond's proportions, symmetry and polish return light. It is the most important of the 4Cs because it controls brilliance, fire and sparkle.

A well-cut diamond sends light back through the top. A poorly cut one lets light leak out the sides or bottom and can look dull, even when color and clarity are perfect. Cut is not the shape of the stone.

Our standard

Our round brilliant diamonds are all excellent cut. Fancy shapes have excellent polish and symmetry.

CARAT

Carat is a diamond's weight, not its size. One carat equals 200 milligrams, divided into 100 points.

Price rises with carat weight because larger diamonds are rarer, but two stones of equal weight can have very different values depending on cut, color and clarity. Lab grown diamonds cost less per carat, so many people choose a larger stone than they first planned.

Our standard

Every size meets the same cut, color and clarity grades, so you never trade quality for size.

CLARITY

Clarity measures the tiny natural features, called inclusions, inside a diamond. Most inclusions in the VS range and above cannot be seen without a loupe.

In lab grown diamonds, inclusions can come from metal traces in the HPHT process or minerals in the CVD method. The scale runs from Flawless through VVS, VS and SI to Included.

Our standard

Our diamonds range from VVS1 to VS2, balancing exceptional quality and value.

COLOR

Color grades how white a diamond looks, from D (colorless) to Z (light yellow). It is not the colored flashes of light, which are called fire.

Colorless diamonds look icy white and shine in white gold or platinum. Once set in a ring, neighboring grades are very hard to tell apart.

Our standard

We work with D–G diamonds, so every stone looks bright and white.

Natural Diamonds vs Lab Grown Diamonds

Both natural and lab-grown diamonds are forms of crystallised carbon. They share essentially the same physical, chemical and optical properties. Their key differences are their origin, formation process and environmental and economic considerations.

Compare The Differences
Natural Diamonds
Lab Grown Diamonds
Compare The Differences Origin
Natural Diamonds The Earth
Lab Grown Diamonds Commercial laboratory
Compare The Differences Conflict Free
Natural Diamonds Yes*
Lab Grown Diamonds Yes*
Compare The Differences Carbon Impact
Natural Diamonds Yes*
Lab Grown Diamonds Yes*
Compare The Differences Diamond Certificate
Natural Diamonds Yes
Lab Grown Diamonds Yes
Compare The Differences Budget Friendly
Natural Diamonds No
Lab Grown Diamonds Yes
Compare The Differences Rarity
Natural Diamonds Yes
Lab Grown Diamonds No
Compare The Differences Formation Time
Natural Diamonds Between 1 to 3.3 billion years
Lab Grown Diamonds 4-5 weeks

*Gleam Adorn only supply diamonds that are conflict free and carbon neutral.

THE CHOICE IS YOURS

The best way to begin is to be well informed. Our team gives you the education and honest advice to decide, whether you prefer a natural or a lab grown diamond. There is no wrong answer, and we are here to guide you at every step.

FREQUENTLY ASKED QUESTIONS

Are lab grown diamonds real diamonds?

What are the 4Cs of a diamond?

Which of the 4Cs is most important?

Do lab grown diamonds come with a certificate?

What color and clarity should I choose?