Myths & Facts About Lab-Grown Diamonds

Lab Grown Diamond and Gemological Loupe—Myths and Facts
ROSY DIAMOND KNOWLEDGE

Myths & Facts About Lab Grown Diamonds

Many claims circulate about Lab Grown Diamonds. Some are true, while others are based on misunderstandings.

We provide factual context on the most common questions and show what really matters when it comes to origin, quality, and purchasing decisions.

MYTH 01

"Lab Grown Diamonds are not real Diamonds."

Crystal structure of a Lab Grown Diamond
FACT

The difference lies in their origin.

Lab Grown Diamonds consist of crystalline carbon and possess the fundamental chemical, physical, and optical properties of a Diamond.

However, they are created under controlled technical conditions and not through natural geological processes inside the Earth.

Key takeaway"Lab Grown" describes how the Diamond is formed—not a Diamond imitation.
MYTH 02

"Lab Grown Diamond is just another name for Cubic Zirconia."

Lab Grown Diamond, Cubic Zirconia, and Moissanite Compared
FACT

Cubic Zirconia and Moissanite are different materials. They may look similar to a Diamond, but they have a different chemical composition and different physical and optical properties.

Lab Grown Diamond

Diamond structure made of crystalline carbon.

Cubic Zirconia

Diamond simulant made from another material.

Moissanite

Independent crystalline material based on silicon carbide.

MYTH 03

"CVD is always better than HPHT."

FACT

CVD and HPHT are different methods for producing Lab Grown Diamonds. The method alone does not indicate how high-quality or attractive the finished, cut Diamond is.

CVD

The Diamond grows layer by layer from a carbon-containing gas environment.

HPHT

The Diamond grows under very high pressure and high temperature.

More decisive than the name of the methodCut, carat weight, dimensions, color, clarity, and the characteristics of the specific diamond should be assessed together.
MYTH 04

"Lab Grown Diamonds are less durable."

FACT

A Lab Grown Diamond has the characteristic high hardness of a Diamond. Its laboratory origin does not automatically make it less suitable for Jewelry or everyday wear.

However, the Jewelry as a whole remains vulnerable to mechanical stress. Settings, prongs, and precious metals can be damaged.

Diamond is hard—Jewelry is not indestructible.Lab Grown Diamond Jewelry should also be worn carefully, maintained, and professionally inspected when necessary.
Lab Grown Diamond ring as a long-lasting piece of Jewelry
Gemmological examination of a Diamond
MYTH 05

“You can immediately recognize a Lab Grown Diamond with the naked eye.”

FACT

Reliable identification of origin should not be based solely on visual inspection.

Gemmological laboratories use specialized instruments and examination methods to distinguish natural Diamonds, Lab Grown Diamonds, and simulants.

MYTH 06

“All Lab Grown Diamonds have the same quality.”

FACT

Lab Grown Diamonds also differ significantly from one another. As with other Diamonds, weight, measurements, color, clarity, cut, and craftsmanship may vary.

The 4Cs

Carat, Cut, Color, and Clarity help describe quality.

The overall picture

A single high rating does not automatically make a Diamond the best choice.

MYTH 07

“More carats automatically mean better quality.”

FACT

Carat refers to a Diamond’s weight. It is not a general assessment of quality.

For example, a larger Diamond may have a less balanced cut, a different color grade, or more noticeable clarity characteristics than a smaller stone.

Consider size and quality separatelyCompare carat weight, actual measurements, cut, color, and clarity.
MYTH 08

“Every Lab Grown Diamond is automatically sustainable.”

FACT

Lab Grown Diamonds do not require traditional Diamond mining. However, this does not mean that every production process automatically has the same environmental impact.

Energy source, manufacturing process, production location, transport, precious metals, and jewelry processing can all play a role.

This is why ROSY communicates in a nuanced wayWe prefer comprehensible information over blanket environmental or sustainability claims.
MYTH 09

“A certificate is a guarantee.”

FACT

What is often referred to as a “Diamond certificate” is generally called a grading report or gemological report by independent gemological institutes.

It documents the professional assessment and identification of the examined Diamond. It should not be equated with a guarantee of future prices or market values.

ROSY product certificate ≠ independent grading reportThe ROSY product certificate documents your piece of jewelry. An IGI grading report, on the other hand, is issued by an independent gemological institute for the examined Diamond.
MYTH 10

“A Diamond is automatically a safe investment.”

FACT

Jewelry and Diamond prices may change. A specific future change in value cannot be guaranteed across the board.

We therefore recommend choosing Diamond Jewelry primarily according to quality, design, personal significance, and intended use.

Buy consciouslyA piece of jewelry should not be selected solely on the basis of an assumed future return.
Lab Grown Diamond Jewelry and conscious purchasing decisions
IN SUMMARY

What you should know about Lab Grown Diamonds

  • Lab Grown Diamonds are not Cubic Zirconia or Moissanite imitations.
  • CVD and HPHT are two different growth methods.
  • Lab Grown Diamonds can differ significantly in quality and appearance.
  • Carat alone does not determine quality.
  • The origin can be professionally determined through gemological analysis.
  • A laboratory report documents characteristics—it is not a guarantee of value.
  • Sustainability issues should be considered in a nuanced way.
  • The best purchasing decision is based on transparent information.
ROSY DIAMOND KNOWLEDGE

Facts instead of uncertainty.

The better you understand Lab Grown Diamonds, the easier it is to compare quality, origin, and personal preferences.

Discover Diamond Knowledge What is a Lab Grown Diamond? Lab Grown Diamond vs. Natural