Lab Created Gemstones Types and Uses - HOLYCOME

Lab created gemstones are no longer a niche curiosity. Synthesized sapphires, rubies, emeralds, and alexandrite are used in fine jewelry, watches, and industrial parts, and they are increasingly sold directly to consumers who want the color of a precious stone without the price or the mining footprint. Yet the category is confusing: people mix up lab created, lab grown, simulated, and imitation, and each word means something different. This guide explains what lab created gemstones actually are, how they are made, which stones are commonly grown, and how they compare to their natural counterparts.

The short version is that a lab created gemstone is chemically, physically, and optically identical to its natural counterpart, grown in a controlled environment rather than pulled from a mine. A simulant or imitation, by contrast, is a different material made to look similar. Lab created ruby is real ruby; red glass is not. That distinction matters for price, durability, and resale.

What Lab Created Gemstones Are

A lab created gemstone has the same chemical composition and crystal structure as the natural mineral. Synthetic ruby is aluminum oxide with chromium, exactly like natural ruby, just grown in a furnace. Synthetic emerald is beryl with chromium, like natural emerald. When a gemologist tests it, the lab created stone reads as the real mineral, though specialized equipment can detect growth patterns that reveal its origin.

This is very different from a simulant. Cubic zirconia looks like a diamond but is a different material. Red glass looks like ruby but is glass. Lab created sapphire is sapphire, atom for atom. The distinction is why lab created gems are sold as legitimate gemstones rather than costume pieces, and why they carry real durability. Our article on ethical sourcing, lab grown vs mined covers the broader tradeoff.

How They Are Grown

Several industrial processes grow gemstones. The Verneuil flame-fusion process melts powdered alumina into a boule, and it has produced synthetic sapphire and ruby since the 1900s. The hydrothermal process grows crystals slowly from a solution under pressure, and it is used for emeralds and some quartz. The flux process grows crystals from a molten flux, producing emerald and ruby that closely resemble natural inclusions. For diamonds, the high-pressure high-temperature method and the chemical vapor deposition method are the two main routes.

Each process leaves characteristic growth fingerprints. Verneuil stones show curved growth lines. Hydrothermal stones show healed fractures and crystal zoning. Flux stones show flux fingerprints. A trained gemologist can usually tell lab created from natural by these features, which is why disclosure matters: reputable sellers label lab created stones honestly, and the stones carry reports describing their origin.

Types of Lab Created Gemstones

The most commonly synthesized gems include:

  • Sapphire and ruby (corundum): widely synthesized, used in jewelry, watches, and industrial bearings.
  • Emerald: hydrothermally grown, with improved clarity over many natural stones.
  • Alexandrite: a rare color-change chrysoberyl, synthesized because natural alexandrite is extremely expensive.
  • Spinel: increasingly grown in many colors, used as an affordable gem.
  • Diamond: grown by HPHT or CVD, sold as lab grown diamonds.
  • Quartz, amethyst, citrine: commonly synthesized and sometimes heat-treated.
  • Opal and turquoise: produced in labs in stabilized forms.

Each type has its own market. Lab created sapphire and ruby are the most established and the most affordable, often used in everyday jewelry. Lab created emerald is prized because natural emerald is heavily included and expensive. Lab created alexandrite fills a gap, because natural alexandrite prices rival fine ruby.

Lab Created vs Natural

Chemically, the two are the same. Durability is identical: a lab created sapphire is still 9 on Mohs, just like a natural one. The differences are price, clarity, and origin. Natural gemstones carry geological history, rarity, and origin value, which is why a fine Burmese ruby costs thousands per carat. A lab created ruby of the same color and size costs a small fraction. Lab created stones also tend to be cleaner, because they grow without the geological stress that causes natural inclusions.

Natural stones carry a sense of rarity and history that many buyers value, especially for investment-grade gems. Lab created stones carry a clean, consistent color and a much lower price. Neither is fake. The choice is between the romance of a natural stone and the practicality of a grown one. For buyers who want a colored gem that they can wear daily without worrying, lab created is often the rational pick.

Color and Consistency

Lab created gemstones offer unusually consistent color. A batch of lab created sapphires from the same growth run will match almost perfectly, which is why jewelry designers love them for suites and matched earrings. Natural gemstones vary widely: no two sapphires are exactly alike, and matching a pair of natural earrings can be expensive and time-consuming.

Consistency also extends to treated color. Many lab created stones are produced in precise hues: a specific padparadscha pink-orange, a specific emerald green, a specific ruby red. This predictability lets designers plan pieces around an exact color. Natural stones, by contrast, require accepting the variation the earth produced. For a buyer who wants an exact color match, lab created is the clear advantage.

Price and Value

Lab created gemstones cost a fraction of natural equivalents. A one-carat fine lab created sapphire may cost tens of dollars, while a natural one-carat sapphire of similar color costs hundreds or thousands. The price gap reflects rarity, not quality. Lab created stones can be produced repeatedly, so supply is stable. Natural stones are finite, and the best colors and origins command premium prices.

Resale value follows the same logic. Lab created stones are cheap to produce, so they have little secondary market value. Natural stones, especially fine ones with origin reports, can hold or gain value. If you buy lab created, plan to enjoy the stone rather than resell it. If you buy natural fine gemstones, you are partially buying a collectible. Our article on lab grown vs natural diamond buying applies the same logic to diamond.

Ethical and Environmental Factors

Lab created gemstones avoid the mining footprint associated with some natural gem sources. They do not require open-pit mining, and their production is energy-intensive but contained. For buyers concerned about conflict mining, labor practices, or environmental disruption, lab created stones offer a transparent supply chain. The energy use of growth furnaces is real, but it is smaller than the footprint of industrial mining per carat of fine gem.

This ethical angle is one reason lab created stones have grown so quickly. A buyer can own a fine blue sapphire ring with a clear, documented origin, without wondering about the mine. Natural gemstones, by contrast, vary widely in their sourcing ethics, and responsible buyers should ask for origin reports. For a broader look at sustainable jewelry choices, lab created gems are a strong option.

Durability and Grading

Because lab created gems are chemically identical to natural ones, their durability is identical. A lab created sapphire is 9 on Mohs. A lab created emerald is still 7.5 to 8 and still oiled or resin-filled, because that is how emerald is treated regardless of origin. A lab created ruby is still corundum, still hard, still durable. The growth method does not weaken the stone.

Grading for lab created stones is similar but not identical to natural. Laboratories issue reports that identify the stone as lab created and describe its color, clarity, and any treatment. A reputable seller will disclose the lab origin. The buyer should still ask whether the stone has been treated, because treatment is common in both natural and lab created colored stones.

Common Myths

Several myths persist. First, that lab created gems are fake. They are not; they are the same mineral, grown above ground. Second, that they are less durable. They are equally durable, because durability is chemical. Third, that they look obviously synthetic. Modern hydrothermal and flux-grown emeralds and rubies are difficult to distinguish from natural without a lab. Fourth, that they are a passing trend. Synthetic corundum has been used in jewelry and watches for over a century.

The remaining honest difference is rarity. Natural gemstones are rare, and lab created ones are not. If rarity is part of why you buy jewelry, natural stones win. If color, clarity, price, and ethics drive your choice, lab created gems are an excellent, increasingly mainstream option.

A Brief History of Synthetic Gemstones

The first commercially successful synthetic gemstone was synthetic ruby, produced by the Verneuil process in the late 1800s. For decades, synthetic ruby and sapphire were used in jewelry, watch bearings, and industrial instruments, and few consumers gave them much thought. Synthetic emerald followed in the mid-twentieth century, grown by flux and later hydrothermal methods. By the 1980s and 1990s, synthetics were common in colored stone jewelry, often sold transparently as lab created.

The lab diamond boom of the 2010s brought the category into the mainstream. Growers improved CVD and HPHT methods to produce gem-quality diamonds in sizes that rival mined stones, and major labs began issuing graded reports. Today, lab created colored gems and lab grown diamonds are a normal, accepted part of the jewelry market. The old stigma has faded, and buyers increasingly choose them on purpose.

How to Read a Lab Created Gem Report

Reputable lab created gemstones come with a report from a recognized gemological laboratory. The report identifies the mineral, states clearly that the stone is lab created, describes its color and clarity, and notes any treatment. It will not pretend the stone is natural. When you buy, ask for the report and check that the word synthetic or lab created appears. A seller who shows a report that omits the origin disclosure is not being transparent.

The report also lists treatments. Many lab created emeralds are oiled or resin-filled, just like natural emeralds, because that is how emerald is stabilized. Some lab created sapphires are heat treated to improve color. These treatments are normal and should be disclosed. A well-documented stone is a better purchase than an unlabeled one, even if the unlabeled stone looks identical. Our guide to lab grown vs natural diamond buying explains how reports work for diamonds.

Price Examples by Stone

Lab created corundum is remarkably affordable. A one-carat lab created blue sapphire can cost tens of dollars wholesale, and a fine one-carat piece in a retail setting costs a few hundred. A comparable natural blue sapphire of good color costs hundreds to thousands per carat. Lab created emerald, which is clearer than most natural emeralds, also costs a fraction. Lab created alexandrite is the most dramatic comparison: natural alexandrite is extremely rare and expensive, while synthetic alexandrite is affordable and widely available.

Lab grown diamonds sit in a different price tier. A one-carat well-graded lab grown diamond costs several hundred to over a thousand dollars, because it is graded and certified like a mined diamond. Even so, that is a fraction of the mined equivalent. The price hierarchy is consistent: lab created stones cost far less than their natural counterparts, and the savings scale with the rarity of the natural stone.

Treatments in Lab Created Stones

Just because a stone is lab grown does not mean it is untreated. Lab created emerald is almost always oiled or resin-filled to fill fissures, because that is the nature of emerald. Lab created ruby and sapphire may be heat treated to improve color. Some lab grown diamonds are treated to enhance color. These treatments are normal, disclosed, and stable, but buyers should know about them.

The difference from natural stones is that treatments are applied knowingly, under controlled conditions, and disclosed on the report. A treated lab created stone is not a lower-quality product; it is a finished product. If a seller claims a lab created stone is completely untreated, ask to see the report. Most are not.

Where Lab Created Stones Are Sold

Lab created gemstones are sold through three channels. Fine jewelry brands offer them as an ethical, affordable option, often with full disclosure. Wholesale suppliers sell them in calibrated sizes for jewelers. Online direct-to-consumer brands market them with educational content. The key is disclosure: the word lab created or synthetic should appear in the listing, the invoice, and the certificate.

Avoid sellers who imply a lab created stone is natural, or who refuse to say how the stone was made. The category is legitimate, and honest sellers have nothing to hide. For buyers who want a broader look at ethical sourcing, lab created stones are one tool, not the only one.

Frequently Asked Questions

Are lab created gems real gems?

Yes. They are the same mineral as natural stones, with the same chemistry, hardness, and optical properties. They are not imitations.

Do lab created gems last as long as natural?

Yes, because durability is chemical. A lab created sapphire is 9 on Mohs and will wear exactly like a natural sapphire.

Can I resell a lab created gem?

Resale is limited because supply is abundant. Buy them to wear, not to invest. Fine natural gems hold secondary value better.

The Future of Lab Created Gemstones

The lab created gem market is moving fast. Growth methods are improving, producing larger, cleaner stones at lower cost. Hydrothermal emerald now rivals fine natural emerald in color and clarity at a fraction of the price. Lab grown diamond production continues to scale, pushing prices down. Newer synthesis techniques are approaching stones once thought impossible to grow in gem quality, including rare varieties of sapphire and chrysoberyl. The trajectory is clear: more stones, better quality, lower prices.

This also means the secondary market for natural gems may continue to soften, especially for stones whose natural supply is abundant. Fine, rare, origin-bearing natural gems will retain value, but mid-tier natural stones will compete with cheaper, cleaner lab created equivalents. For buyers, this is good news: the gap between a beautiful gem and an affordable one keeps narrowing. For sellers of mid-tier natural stones, the market is adjusting. Our article on sustainable jewelry tracks how this shift is reshaping what people buy.

Questions to Ask the Seller

When you buy a lab created gemstone, ask four questions. First, what mineral is it, and how was it grown? The seller should name the process, such as hydrothermal emerald or CVD diamond. Second, do you have a lab report, and does it say lab created? Third, has the stone been treated, and is the treatment disclosed? Fourth, what is the return policy, because color is personal? A reputable seller answers all four without hesitation. If they deflect, keep looking.

Also ask about durability for the jewelry type. A lab created emerald is still emerald, still oiled, and still best in a pendant. A lab created sapphire at 9 on Mohs is fine in a ring. The lab origin does not change how the mineral behaves. Buying from a seller who understands this, rather than one who simply markets lab created as magically better, is the difference between a piece that lasts and one that disappoints. Our article on ethical sourcing is a good companion read.

The Bottom Line on Lab Created Gemstones

Lab created gemstones are real minerals, grown in controlled conditions, chemically identical to their natural counterparts, at a fraction of the price. They offer consistent color, ethical sourcing, and full disclosure. They are not investments, and they have little resale value, but they are excellent for buyers who want a durable, beautiful stone to wear and love. As production scales and quality improves, they are only going to become more popular.

If you want a fine colored gem for daily wear without the natural-stone premium, lab created is often the smart choice. If you want a rare, collectible natural stone with origin value, natural remains the answer. Either way, buy with a report, ask about treatments, and choose the stone on purpose.

Lab created gemstones have come of age. What was once a niche curiosity is now a mainstream, responsible way to own fine color. As the technology improves and prices fall, more buyers will choose a grown stone simply because it is the better product, not because it is the cheaper one. For the ethical side of the decision, our overview of sustainable jewelry choices pairs well with this guide.

The category is still evolving, and buyers today benefit from that momentum. Growers compete on color, clarity, and price, and laboratories keep improving the reports that disclose what is inside. Ten years ago, choosing a lab created gem meant accepting compromises. Today it often means choosing a cleaner, more consistent stone than you could afford in natural material. That is a meaningful shift, and it is why more fine jewelers now carry lab created lines openly, rather than treating them as a secret alternative.

Who Should Buy Lab Created

Lab created gemstones are ideal for buyers who want a fine colored gem for daily wear at an accessible price, who care about consistent color, and who prefer a transparent ethical supply chain. They are excellent for engagement rings that feature a colored center stone, for matching earring suites, and for pieces where you want the best color without the natural-stone markup. They are less ideal for buyers who want a collectible natural stone with investment potential.

The market has matured to the point that lab created stones are no longer a consolation prize. They are a deliberate choice, often the smart choice, for anyone who wants to wear a real, durable, beautiful gemstone without paying the natural-stone premium. Whether you choose a grown sapphire, a hydrothermal emerald, or a lab grown diamond, the result is a real gem, made intentionally, that will last as long as the earth-made equivalent.

A Final Word on Lab Created Stones

Lab created gemstones have moved from a niche curiosity to a mainstream choice, and the trajectory is clear. Better growth methods, lower prices, and honest reporting make them an increasingly rational default for buyers who want fine color without the natural-stone premium. They are not fakes, not compromises, and not a passing trend. They are real minerals, grown intentionally.

The next time you see a vivid colored gem at a price that seems too good, ask whether it is lab created. If the seller says yes openly and shows a report, you are looking at a legitimate, beautiful, durable stone. Buy it on purpose, wear it proudly, and enjoy the color without the guilt or the markup.

Related Articles

For background on how lab-grown diamonds are produced, the Wikipedia article on synthetic diamonds explains the HPHT and CVD growth methods.