Are Lab-Grown Gemstones Fake? Let's Clear It Up Once and for All

If you're hearing the term "lab-grown gemstones" for the first time, you might be wondering: Are gemstones made in a lab fake? How do they compare to natural gemstones?

This is a question almost every jewelry buyer asks. Today, let's settle it once and for all.

Here's the most straightforward answer upfront: Lab-grown gemstones are not fake. They are real gemstones.
This isn't a marketing claim; it is the consensus of gemological laboratories and the gemological community worldwide.

But a conclusion alone isn't enough. We need to explain why, and where exactly that "realness" lies.

Fakes, Simulants, and Lab-Grown: Three Fundamentally Different Things

To understand lab-grown gemstones, you first need to separate three easily confused concepts.

Imitations or simulants, such as glass, plastic, or synthetic cubic zirconia.

These materials only "look like" gemstones; their chemical composition and physical properties are completely different.

The conclusion you would see on a grading report would be "glass" or "imitation diamond" — the word "gemstone" wouldn't even appear.

Lab-grown gemstones 

Their chemical composition, crystal structure, hardness, refractive index, dispersion… all physical and optical properties are identical to those of natural gemstones.

The only difference is they are "born" inside precision equipment in a laboratory, rather than deep within the Earth's crust.

Figure 1: A padparadscha fashioned from one of our batches of titanium-sapphire crystals

Here's the simplest analogy:

• Natural ice — Ice formed in nature.
• Ice from a freezer — Ice formed by artificial cooling.
• Fake plastic ice — Looks like ice, but isn't made of water at all.

Lab-grown gemstones are the ice from your freezer. By nature, they are real ice, not plastic.

Leading international gemological laboratories, such as GIA (Gemological Institute of America) and IGI (International Gemological Institute), identify lab-grown gemstones as "laboratory-grown diamond," "laboratory-grown ruby," and so on — the gemstone variety name is stated clearly right on the report.

Imitations, on the other hand, don't even qualify for the word "gemstone."

So, if someone tells you "lab-grown gemstones are fakes," chances are they have confused "lab-grown" with "imitation."

If They're Completely Identical to Natural Gemstones, Why Are They So Much Cheaper?

This is the second most frequently asked question.

The answer is: The difference lies in rarity, not quality.

Natural gemstones formed tens of millions or even hundreds of millions of years ago, the result of a chance occurrence under specific geological conditions.

Top-quality natural gemstones are extremely rare, and this forms the basis of their collectible value and pricing.

Lab-grown gemstones are no longer constrained by rarity.

In a lab, it takes anywhere from a few weeks to a few months to grow a crystal of excellent quality, and production can be sustained continuously.

Here's where the price difference comes from:

The price of a natural gemstone = The cost of the gemstone itself + The premium driven by extreme rarity.

The price of a lab-grown gemstone = The cost of the gemstone itself + A reasonable profit margin.

The price of a lab-grown gemstone is typically much lower than that of a natural gemstone of the same quality.

This isn't a case of "you get what you pay for"; the pricing logic is fundamentally different.

Can You Tell Them Apart with the Naked Eye?

You cannot.

Not just with the naked eye — even with a loupe or standard gemological testing tools, it is very difficult to tell them apart.
The optical properties of lab-grown and natural gemstones are entirely consistent, and an average person absolutely cannot distinguish between them.
Professional gemological laboratories rely on techniques such as spectroscopy, fluorescence imaging, and microscopic observation of internal growth patterns.

For example, a lab-grown diamond may exhibit a different fluorescence pattern under specific light sources, and flux-grown lab-grown rubies may contain characteristic flux inclusions — all of which require testing in a professional laboratory to identify.
So when you wear a lab-grown gemstone out, no one will ever be able to tell it's "not natural."

It sparkles and shines just like any expensive gemstone you've ever seen.

So, Are Lab-Grown Gemstones Worth Buying?

That depends on what you're looking for.

If you're a jewelry lover or daily wearer:

They are absolutely worth it.

You can get a larger, cleaner, better-colored gemstone for less money, enjoy the same visual impact wearing it, and spare yourself the anxiety of "one knock and I'll regret it for half a year."

It makes "everyday luxury" truly accessible.

Many people even use lab-grown pieces as travel alternatives or active-wear jewelry, with outstanding results.

If you are purely collecting for investment purposes:

Natural top-tier gemstones have an irreplaceable status.

The market price of lab-grown gemstones will gradually decline as technology advances; they do not possess the value retention or appreciation potential that rare natural gemstones do.

So, simply put:

Self-reward wearing, fashion styling, or a meaningful gift → Lab-grown gemstones are an excellent choice.

Long-term asset allocation or traditional collecting → Natural gemstones better suit these needs.

A Few Final Words

The word "fake" doesn't do lab-grown gemstones justice.

They are the fruition of decades of progress in materials science — a work of craftsmanship in which engineers replicate nature's wonders inside a laboratory.

They are not imitations of nature, but the crystallization of human ingenuity.

Guests who choose lab-grown gemstones from us are, for the most part, not short on budget, but clearer about what they want:

Beauty, without the burden.

Quality, without paying a "naïveté tax."

Shine brightly when you step out, without tiptoeing around in fear.

This is a smarter consumption philosophy:

Spend your money on what matters to you, not on what others tell you you "should" spend it on.

If you have any further questions about lab-grown gemstones, feel free to contact our customer service team anytime.