# Lab-Grown Diamond Myths Debunked: What's True, What's Marketing? **By Ara Talachian** · 2026-01-02 Lab-grown diamonds are chemically, physically, and optically identical to natural diamonds — the FTC confirmed this in 2018. Most myths about lab-grown diamonds originate from marketing narratives by natural diamond interests, or from confusion with diamond simulants like cubic zirconia. The science is clear: same hardness (Mohs 10), same refractive index (2.417), same durability, same grading scale. What differs is origin and price. On This Page [Quick Answer](#quick-answer) [10 Myths Debunked](#myth-busting) [Expert Breakdown](#expert-breakdown) Quick Answer: The 6 Most Important Facts - **Lab-grown diamonds ARE real diamonds** — identical carbon crystal structure, confirmed by FTC (2018) and GIA - **They pass diamond testers** — identical thermal conductivity to natural diamonds; both test as genuine - **They do NOT fade, cloud, or change** — diamond crystal structure is stable indefinitely; confusion with cubic zirconia - **They are NOT always flawless** — lab-grown diamonds span the full FL–I3 clarity range, just like natural diamonds - **Lower price = production economics, not lower quality** — identical 4Cs grades = identical appearance - **They ARE IGI certified** — same 4Cs grading system, same standards, full grading report ## 10 Lab-Grown Diamond Myths — Debunked **❌ Myth 1** "Lab-grown diamonds aren't real — they're synthetic or fake." **✅ Fact** Lab-grown diamonds are chemically, physically, and optically identical to natural diamonds. The FTC ruled in 2018 that the unqualified term "diamond" applies to both. "Synthetic" in gemology means "laboratory-created" — not fake. Diamond simulants (cubic zirconia, moissanite) have different chemical compositions entirely. **❌ Myth 2** "Lab-grown diamonds are less durable and won't last as long." **✅ Fact** Durability depends on crystal structure, not origin. Both have identical Mohs 10 hardness, toughness, and chemical stability. A diamond crystallized last month in a lab has the same durability as one formed 2 billion years ago in Earth's mantle — if both have identical crystal structure. **❌ Myth 3** "Lab diamonds will turn cloudy, fade, or change color over time." **✅ Fact** No scientific evidence supports this. Diamond crystal structure is stable indefinitely at normal temperatures and pressures. This myth comes from confusion with cubic zirconia, which does cloud from surface wear. Diamonds — natural or lab-grown — do not degrade. **❌ Myth 4** "Diamond testers can't detect lab-grown diamonds" or "they won't test as real." **✅ Fact** Thermal conductivity testers detect both natural and lab-grown diamonds as genuine. Both have identical thermal conductivity — distinctly different from simulants. Advanced equipment can identify origin, but this confirms both are real diamonds, not that one is fake. **❌ Myth 5** "You can tell lab-grown from natural diamonds just by looking." **✅ Fact** Natural and lab-grown diamonds are visually indistinguishable without gemological equipment. Even trained gemologists cannot reliably identify origin through visual inspection alone. Spectroscopy, UV fluorescence, or microscopic examination is required. **❌ Myth 6** "Lab-grown diamonds have no resale value." **✅ Fact** Both natural and lab-grown diamonds resell at 25–50% of retail price. Neither type maintains retail value in resale. Neither should be purchased as an investment. The difference is liquidity — natural diamonds have more established secondary markets — but "no resale value" is simply inaccurate. **❌ Myth 7** "Lab diamonds are cheap because they're lower quality." **✅ Fact** Lab-grown diamonds cost less due to production economics, not quality. Laboratory synthesis costs less than mining. Both span the full FL–I3 clarity and D–Z color range. Identical 4Cs grades = identical appearance. The price difference is production method, not quality. **❌ Myth 8** "Lab-grown diamonds are always flawless and perfect." **✅ Fact** Lab-grown diamonds span the full FL–I3 clarity range, just like natural diamonds. HPHT diamonds may contain metallic flux inclusions; CVD diamonds may contain planar defects. Always check the IGI certificate — never assume lab-grown means flawless. **❌ Myth 9** "Lab-grown diamonds are always 100% eco-friendly." **✅ Fact** Environmental impact depends on energy sources. Lab diamonds using renewable energy: 15–50 kg CO₂e per carat vs. 125–160 kg CO₂e for mining. But lab diamonds using fossil fuel electricity may have similar or higher footprints. "Eco-friendly" claims require verification of energy sources. **❌ Myth 10** "Lab diamonds can't get real certificates." **✅ Fact** Lab-grown diamonds are certified by IGI, GIA, and GCAL using the same 4Cs grading standards as natural diamonds. IGI is the leading certification for lab-grown diamonds, providing full cut, color, clarity, and carat weight grades. All DEEVE lab-grown diamonds are IGI certified. Every DEEVE diamond is IGI certified, ethically sourced, and set in solid 14K gold. Browse [Diamond Rings](/collections/diamond-rings), [Diamond Stud Earrings](/collections/diamond-stud-earrings), and [Tennis Bracelets](/collections/tennis-bracelets). Explore related expert resources from Ara Talachian: [Diamond Education Hub →](/pages/diamond-education-hub) [Diamond Buying Guide →](/blogs/diamond-education/lab-grown-diamond-buying-guide) [Lab-Grown vs Natural →](/blogs/diamond-education/lab-grown-vs-natural-diamonds-identical-structure-different-origins-a-scientific-review) [About the Author →](/pages/ara-talachian-master-goldsmith-certified-gemologist) Want the full evidence-based breakdown? Continue below for a detailed analysis of each myth — with scientific sources, gemological research citations, and materials science context — authored by Ara Talachian, Master Goldsmith & Certified Gemologist. ## Expert Breakdown: Lab-Grown Diamond Myths — Separating Science from Marketing Claims ## Why Myths Persist in the Lab Grown Diamond Industry Lab-grown diamond myths originate from multiple sources: marketing narratives from natural diamond interests seeking to differentiate their products, misunderstandings about materials science and gemology, oversimplified explanations that create confusion, and conflicting claims from various industry stakeholders. The rapid growth of laboratory diamond production — from niche industrial applications to mainstream gem-quality jewelry — has outpaced public education about the technology. This knowledge gap creates space for misconceptions to spread through social media, retail environments, and consumer discussions. Evidence-based analysis using gemological research, materials science, and certification standards provides clarity on common myths and separates scientific facts from marketing claims. For a full scientific comparison of lab-grown and natural diamonds, see [Lab Grown Diamond vs Natural Diamond: Identical Structure, Different Origins](/blogs/diamond-education/lab-grown-vs-natural-diamonds-identical-structure-different-origins-a-scientific-review). ## Authenticity and “Real Diamond” Claims ### Myth: “Lab-grown diamonds aren’t real diamonds — they’re synthetic or fake.” **Fact:** Lab-grown diamonds are chemically, physically, and optically identical to natural diamonds. Both consist of crystalline carbon arranged in a tetrahedral lattice structure. The Federal Trade Commission ruled in 2018 that the unqualified term “diamond” applies to both natural and laboratory-grown stones, as they share identical composition and properties. The term “synthetic” in gemology means “laboratory-created” and does not imply “fake” or “imitation.” This differs from diamond simulants (cubic zirconia, moissanite) which have different chemical compositions and properties entirely. Both natural and lab-grown diamonds share the same refractive index (2.417), hardness (Mohs 10), thermal conductivity, and optical characteristics. _Evidence sources: GIA gemological research, FTC Jewelry Guides (2018), ISO diamond standards_ ## Durability and Longevity Myths ### Myth: “Lab-grown diamonds are less durable and won’t last as long as natural diamonds.” **Fact:** Durability depends entirely on crystal structure, not origin. Lab-grown and natural diamonds have identical hardness (Mohs 10), toughness, cleavage behavior, and chemical stability. Both resist scratching from all materials except other diamonds and maintain structural integrity indefinitely under normal conditions. Materials science confirms that atomic arrangement — not formation history — determines mechanical properties. A diamond crystallized last month in a laboratory has the same durability as a diamond formed 2 billion years ago in Earth’s mantle, provided both have identical crystal structure and purity. For a full analysis, see [Diamond Durability and Hardness: Mohs Scale, Toughness, and Long-Term Wear](/blogs/diamond-education/diamond-durability-hardness-mohs-scale). _Evidence sources: Materials science research on crystalline carbon, GIA durability testing_ ### Myth: “Lab diamonds will turn cloudy, fade, or change color over time.” **Fact:** No scientific evidence supports claims of clarity degradation, color fading, or structural changes in lab-grown diamonds over time. Diamond crystal structure remains stable indefinitely at normal surface temperatures and pressures. Neither natural nor lab-grown diamonds exhibit time-dependent property changes under jewelry wear conditions. This myth likely originates from confusion with cubic zirconia — a diamond simulant, not a diamond — which can become cloudy from surface wear and oil accumulation. Diamonds, whether natural or lab-grown, do not experience this degradation due to their superior hardness and chemical stability. _Evidence sources: Long-term gemological studies, crystallography research, GIA stability testing_ ## Detection and Testing Myths ### Myth: “Diamond testers can’t detect lab-grown diamonds” or “Lab diamonds won’t test as real.” **Fact:** Thermal conductivity testers — the most common handheld diamond testing devices — detect both natural and lab-grown diamonds as genuine diamonds. These testers measure thermal conductivity, which is identical for natural and lab-grown diamonds and distinctly different from simulants like cubic zirconia or moissanite. Advanced gemological equipment (spectroscopy, photoluminescence, microscopy) can distinguish natural from lab-grown diamonds by detecting trace elements, growth patterns, and fluorescence characteristics. However, this detection confirms that both are genuine diamonds — it identifies origin, not authenticity. _Evidence sources: GIA detection methodology, thermal conductivity testing standards_ ### Myth: “You can tell lab-grown from natural diamonds just by looking at them.” **Fact:** Natural and lab-grown diamonds are visually indistinguishable without gemological equipment. Trained gemologists cannot reliably identify origin through visual inspection alone — identification requires spectroscopy, UV fluorescence analysis, or microscopic examination of inclusion types and growth patterns. Many lab-grown diamonds contain no diagnostic inclusions visible even under magnification. _Evidence sources: GIA and IGI identification protocols, gemological training standards_ ## Value and Pricing Myths ### Myth: “Lab-grown diamonds have no resale value.” **Fact:** Both natural and lab-grown diamonds sell at significant discounts to retail prices in secondary markets. Natural diamonds typically resell at 25–50% of retail price; lab-grown diamonds resell at similar or slightly lower percentages. Neither type maintains retail value in resale. The key difference is liquidity — natural diamonds have more established secondary markets, while lab-grown diamond resale markets are still developing. However, “no resale value” is inaccurate. Diamonds — natural or lab-grown — should be purchased for personal enjoyment rather than investment. _Evidence sources: Secondary market analysis, jewelry resale data, consumer economics research_ ### Myth: “Lab diamonds are cheap because they’re lower quality.” **Fact:** Lab-grown diamonds cost less than natural diamonds due to production economics, not quality differences. Laboratory synthesis has lower costs than mining, processing, and distributing natural diamonds. Both types span the full quality range from Flawless to Included clarity and D to Z color. A lab-grown diamond and a natural diamond with identical 4Cs grades have identical appearance and quality — the price difference reflects production method economics, not quality. _Evidence sources: Diamond pricing indices, production cost analysis, certification data_ ## Quality and Appearance Myths ### Myth: “Lab-grown diamonds are always flawless and perfect.” **Fact:** Lab-grown diamonds span the full clarity range from Flawless (FL) to Included (I3), just like natural diamonds. Inclusions occur in both types — natural diamonds contain mineral inclusions from geological formation, while lab-grown diamonds may contain metallic flux (HPHT) or planar defects (CVD). Certification data from IGI shows lab-grown diamonds distributed across all clarity grades. For a full breakdown of clarity grading, see [What Is Diamond Clarity and Which Grade Should You Choose?](/blogs/diamond-education/diamond-clarity-inclusions-grading) _Evidence sources: IGI grading statistics, clarity distribution analysis_ ### Myth: “HPHT diamonds are lower quality than CVD diamonds” (or vice versa). **Fact:** Both HPHT and CVD methods produce gem-quality diamonds across the full range of color, clarity, and size. Quality depends on specific growth parameters and conditions, not the method itself. Choose based on the specific diamond’s certified grades rather than growth method. For a full technical comparison, see [CVD vs HPHT Diamond Growth: Process Differences and Quality Outcomes](/blogs/diamond-education/cvd-vs-hpht-diamond-growth). _Evidence sources: Growth method research, certification data comparison, gemological quality analysis_ ## Environmental and Ethical Myths ### Myth: “Lab-grown diamonds are always 100% eco-friendly and sustainable.” **Fact:** Environmental impact depends on energy sources, not just production method. Lab-grown diamonds produced using renewable energy have substantially lower carbon footprints than mining (15–50 kg CO₂e per carat vs. 125–160 kg CO₂e per carat for mining). However, lab diamonds produced with fossil fuel-based electricity may have similar or higher carbon footprints. “Eco-friendly” claims require verification of energy sources and third-party certification. _Evidence sources: Life cycle assessment studies, carbon footprint analysis, sustainability certifications_ ### Myth: “All natural diamonds fund conflict” or “All lab diamonds are ethical.” **Fact:** Both claims oversimplify complex supply chains. Most natural diamonds come from conflict-free sources with Kimberley Process certification. Conversely, “lab-grown” doesn’t automatically mean “ethical” — labor practices, energy sources, and business ethics vary among laboratory diamond producers. Ethical sourcing requires transparency and verification for both types. _Evidence sources: Kimberley Process documentation, supply chain transparency research_ ## Certification and Grading Myths ### Myth: “Lab diamonds can’t get real certificates.” **Fact:** Lab-grown diamonds are certified by the same major gemological laboratories as natural diamonds — IGI, GIA, and GCAL — using the same 4Cs grading standards. IGI is the leading certification standard for lab-grown diamonds, providing full cut, color, clarity, and carat weight grades with detailed inclusion plots and growth method disclosure. All DEEVE lab-grown diamonds are IGI certified. Note: As of late 2025, GIA transitioned to a Premium/Standard classification system for colorless lab-grown diamonds rather than full 4Cs grading. IGI continues to provide complete 4Cs grading, making it the preferred certification for lab-grown diamond buyers who want detailed, comparable quality information. For a full explanation, see [Understanding IGI Lab Grown Diamond Certificates](/blogs/diamond-education/understanding-igi-lab-grown-diamond-certificates-verification-grading) and [Understanding GIA Lab-Grown Diamond Reports](/blogs/diamond-education/understanding-gia-lab-grown-diamond-reports). _Evidence sources: IGI certification standards, GIA policy documentation, laboratory grading reports_ ## Evaluating Marketing Claims Critically When encountering claims about lab-grown or natural diamonds, apply critical evaluation: - **Request evidence:** Ask for scientific sources, peer-reviewed research, or third-party verification supporting claims. - **Check source credibility:** Consider whether information comes from independent researchers, certified gemologists, or parties with commercial interests. - **Verify with multiple sources:** Cross-reference claims against IGI, academic research, and industry-neutral sources. - **Distinguish facts from values:** Scientific facts (hardness, composition) differ from value judgments (“better,” “more special”). Personal preferences are valid but shouldn’t be presented as objective facts. - **Demand transparency:** Ethical vendors provide clear information about origin, treatments, certification, and sourcing without exaggeration or omission. ## Related Articles - [Lab Grown Diamond vs Natural Diamond: Identical Structure, Different Origins](/blogs/diamond-education/lab-grown-vs-natural-diamonds-identical-structure-different-origins-a-scientific-review) - [Lab Grown Diamond Buying Guide: 4Cs, Certification & Pricing](/blogs/diamond-education/lab-grown-diamond-buying-guide) - [What Is Diamond Clarity and Which Grade Should You Choose?](/blogs/diamond-education/diamond-clarity-inclusions-grading) - [CVD vs HPHT Diamond Growth: Process Differences and Quality Outcomes](/blogs/diamond-education/cvd-vs-hpht-diamond-growth) - [Understanding IGI Lab Grown Diamond Certificates](/blogs/diamond-education/understanding-igi-lab-grown-diamond-certificates-verification-grading) - [Diamond Education Hub — All Guides](/pages/diamond-education-hub) - [Diamond FAQ — Complete Guide](/pages/diamond-faq-guide) - [Diamond Basics FAQ](/pages/diamond-basics-faq-2) - [Diamond Value & Resale FAQ](/pages/diamond-value-resale-faq) - [Diamond Authenticity FAQ](/pages/diamond-authenticity-faq) This guide was authored by [Ara Talachian](/pages/ara-talachian-master-goldsmith-certified-gemologist), Master Goldsmith & Certified Gemologist with 25+ years of experience in fine jewelry design, crafting, and appraisal. This article draws on GIA gemological research, FTC Jewelry Guides (2018), IGI certification standards, materials science research on crystalline carbon, and peer-reviewed gemological journals including _Gems & Gemology_. For more expert resources, visit the [Diamond Education Hub](/pages/diamond-education-hub). ## Shop IGI-Certified Lab-Grown Diamonds All DEEVE lab-grown diamonds are IGI certified, ethically sourced, and set in solid 14K gold with a lifetime warranty and free shipping across Canada and the US. [Shop Diamond Jewelry](/collections/diamond-jewelry) [Diamond Education Hub](/pages/diamond-education-hub) **Tags:** diamond certification, diamond education, diamond facts, diamond myths, diamond science, diamonds, lab-grown diamonds, natural diamonds --- > Source: [DEEVE](https://deeve.ca/blogs/diamond-education/lab-grown-diamond-myths-vs-facts)