Can A Jeweller Tell If A Diamond Is Lab Grown?

While genuine diamonds are formed deep within the earth’s crust, lab-created diamonds are 100% authentic because they share the same chemical and physical properties. They are a gift to us from Mother Earth, allowing us to wear them around our fingers or our necks!

Expert gemologists can’t tell the difference between the two with the naked eye, but jewelers who have been in this business for years might.

The diamonds set in these engagement rings were either created in a laboratory or extracted from the earth.

Try going with your instincts to tell them apart, or get educated on man-made diamonds yourself by reading the article below.

So, can a jeweler know if your diamond is lab grown?

jeweler working

Professional jewelers are unable to visually differentiate lab-grown diamonds from natural diamonds.

Visually and with the aid of specific tools is a whole different matter for them.

Under loupes or microscopes, lab-grown diamonds cannot be distinguished from natural diamonds.

The stone is a fake if it lacks a laser inscription indicating that it was created in a laboratory.

There will be signs and lines that indicate whether a laser was used to push the diamond. It takes a bit of practice to determine what you may be dealing with.

Based on their weight or appearance, jewelers can immediately recognize these stones, which is why a scale is important in this business.

What else do you need to know about its making & testing?

testing diamond

A diamond tester will accept lab-grown diamonds.

Because both synthetic and natural diamonds are composed completely of carbon, they are chemically identical.

Diamond testers employ electrical and thermal conductivity to identify and classify diamonds.

The electrical conductivity of a material describes the rate at which electricity can be transmitted through it.

Different speeds will have various effects on it, which is why doing a proper reading is important.

Thermal conductivity measures the transfer of heat in a comparable manner.

In terms of both heat and electricity, the conductivity of diamonds varies widely. Diamonds are excellent heat conductors, but they are poor electrical conductors.

A rock will pass the test if it has the same chemical and thermal conductivity as a diamond.

However, some diamonds that pass the scientific examination may be moissanite.

How to test it?

different diamonds

Most laboratory-grown diamonds are clearly marked as synthetic.

Laboratory-grown diamonds promoted as natural are a source of concern in the jewelry business.

Most makers of lab-grown diamonds are legitimate and truthful about their products.

You should be aware that each type will have its own mark.

Lab-grown Type IIa diamonds are common.

Type IIa indicates the diamond’s carbon content.

Less than 2% of natural diamonds are Type IIa, although the majority of synthetic jewels are.

Type IIa diamonds are created in a laboratory.

As with all gemological tests, the Type IIa test is only an indicator that can help you out by knowing what you’re working with.

The examination requires a loose (unmounted) diamond in addition to photoluminescence and ultraviolet spectroscopy.

Are lab-grown diamonds real?

Contrary to popular belief, lab-created diamonds are not “fake” diamonds.

Contrary to cubic zirconia or moissanite, lab diamonds are “genuine” diamonds because of their carbon-based chemical compound.

These lab-produced diamond imitators are not actual diamonds since they do not contain carbon atoms.

There is a perceptible difference between a lab-created diamond and a substitute like cubic zirconia or moissanite as opposed to lab diamonds and genuine diamonds, which are intrinsically identical in appearance, feel, and hardness.

Simulants lack genuine diamonds’ brilliance and glitter.

Cubic zirconia has a lower refractive index than diamonds, 2.2 vs. 2.42.

Actually, moissanite has a greater refractive index (2.65 – 2.69).

Due to its higher refractive index, moissanite produces a vividly colored reflection that can be a little too intense for some.

Additionally, there are variations in hardness.

On the Mohs scale of hardness, diamonds rank a perfect 10, moissanite is in the range of 9 to 9.5, and cubic zirconia is at 8.

Both cubic zirconia and moissanite have little value and are bad investments, much like lab-created diamonds.

FAQ that people ask


1. How long does it take to grow a diamond?

Lab diamonds of 1 carat can be created in as little as 7-10 days, while those of 3 carats take around a month to fully complete.

If you try to speed up the diamond growth process, the diamond crystal will crack or develop vacancies, turning the diamond a grown or gray color. This is why the process is slow but totally worth your time and investment.

2. Where are lab diamonds grown, and where can you find them?

Diamonds are created in laboratories throughout the world by teams of scientists, engineers, and technicians using cutting-edge technology.

From west to east, these are the regions where commercial diamonds are being mined:

  • US
  • UK
  • Canada
  • Germany
  • France
  • China
  • India
  • Singapore
  • Japan

You can find them in bigger and more well-developed countries and cities. Anyone with a legit laboratory may produce these types.

3. Do lab diamonds hold a value?

The truth is that any piece can have a sentimental value, it all comes down to the wearer of the ring. Investment-grade diamonds are a safer investment than jewelry-grade diamonds, which tend to depreciate in value over time.

The percentage of resale discount required by a buyer for lab-grown and mined diamonds is frequently identical.

In all instances, selling to an individual is the most favorable alternative for a seller.

Where to find a gorgeous piece and jewelry that you’re going to love?

Do you want to purchase a gorgeous piece for yourself or for your loved one, and are you looking for durable and high-quality jewelry? You can browse through a ton of cool lab grown diamonds right here, and find the perfect engagement ring, present, or just a piece that you can wear on a daily basis!

This brand offers a lot of cute and elegant items, and everyone will find something that suits them. There are also great discounts that you’ll want to check out.