A modern option for modern love.
Diamonds have long symbolized lasting love. And while natural diamonds remain timeless, today’s couples have more choices than ever—including man-made diamonds created in a lab.
Are lab-grown diamonds real diamonds? They’re man-made above ground using advanced technology that replicates the high heat and pressure that forms natural diamonds deep within the Earth’s crust over billions of years. Chemically, physically, and visually, they are virtually identical to natural diamonds.
So what’s the difference between lab-grown and natural diamonds? Just their origin—and the value that comes with it.
Brilliance & Light Performance
Lab-grown diamonds deliver the same brilliance, fire, and scintillation as natural diamonds. Whether you’re drawn to a classic round brilliant or a unique fancy shape, lab-grown stones are cut with the same precision and artistry as mined stones, designed to reflect light beautifully.
They’re graded for cut quality, symmetry, and polish. In fact, most people (including seasoned jewelers) can’t tell the difference without advanced gemological identification equipment.
Updated Grading Standards
How are lab-grown and natural diamonds graded?
One key distinction in today’s market is how lab-grown diamonds are graded. As of 2025, the Gemological Institute of America (GIA) now provides lab-grown diamonds with simplified grading using broader quality classifications—such as “Premium” or “Standard”—rather than the full 4Cs reserved for natural diamonds. This is part of a broader industry shift to clearly separate the two product categories for consumers.
Don’t worry: these ratings still give you helpful guidance on quality. And when you shop with us at Lewis Jewelers, you’ll always receive full transparency, expert guidance, and certified documentation—regardless of which diamond type you choose.
How Are Lab-Grown Diamonds Created?
Lab-created diamonds are man-made using one of two high-tech processes:
• High Pressure, High Temperature (HPHT): A small diamond seed is placed in a press that mimics the intense heat and pressure found deep within the Earth’s mantle. Over several weeks, carbon atoms bond to form a larger crystal.
• Chemical Vapor Deposition (CVD): A diamond seed is placed in a vacuum chamber filled with carbon-rich gas. When heated, the gas releases carbon atoms that gradually build up on the seed, growing a diamond layer by layer.
Both processes produce real diamonds that are virtually indistinguishable from those formed over billions of years within the earth.
Inclusions & Clarity
Just like natural diamonds, lab-grown stones can contain internal inclusions or tiny imperfections. In lab-grown diamonds, these inclusions may be metallic or caused by the growth process—but in many cases, they’re not visible to the naked eye.
Our team at Lewis Jewelers can help you identify “eye-clean” options with excellent clarity and show you how they compare in different lighting and settings.
What are the price and value differences between lab-grown and natural diamonds?
One of the biggest reasons couples consider lab-grown diamonds is cost. On average, lab-grown diamonds are less expensive than comparable natural diamonds of the same size and appearance. That means you can get a larger carat weight, better color, or a more intricate setting without increasing your budget.
It’s a great option for couples who want the look and feel of a high-quality diamond while staying mindful of cost.
However, it’s important to understand that lab-grown diamonds do not retain their value in the same way as natural diamonds. Because they can be produced in ever increasing quantities, they are not considered rare—and they currently have minimal to no resale value in the secondary market.
If long-term value or legacy potential is part of your decision-making, we’ll help you weigh those factors honestly and clearly.
Ethical and Environmental Considerations
For many, lab-grown diamonds offer peace of mind when it comes to ethics and sourcing. These stones require no mining and are produced in controlled environments. Many manufacturers are now using renewable energy and adopting carbon-neutral practices, making lab-grown diamonds an increasingly sustainable choice.
That said, lab creation still requires a significant energy input, so it’s important to ask about the lab’s production standards—something we’re happy to discuss when you visit Lewis Jewelers.
Who Is Choosing Lab-Grown Diamonds?
Lab-grown diamonds are particularly popular with Gen Z and millennial couples. They’re also a favorite among those who want to prioritize budget or upgrade the look and size of their diamond.
From engagement rings and earrings to fashion-forward pendants, lab-grown diamonds are showing up in all categories of fine jewelry—and we’re here to guide you to make the perfect decision that expresses your personality and style.
How to Shop Lab-Grown Diamonds with Confidence
At Lewis Jewelers, we believe the best diamond is the one that fits your values, your lifestyle, and your budget. Whether you're just starting to explore or already know what you want, we’ll walk you through every option—with no pressure and complete transparency.
What I expect when shopping for a diamond at Lewis Jewelers in Ann Arbor?
• Clear, honest advice on how lab-grown compares to natural diamonds
• Certified stones from reputable labs, including GIA and IGI
• Personalized service from a team of committed professionals that’s been helping couples choose “the one” since 1921
Let’s Explore Your Options Together
Thinking about a lab-grown diamond? Visit us at our Ann Arbor showroom to see and compare them side-by-side with natural diamonds. Hold them, examine the quality, and ask us anything—we’re here to help you make a decision that feels right for you.
If you’re leaning toward a natural diamond, every loose stone we offer is certified by one of the world’s leading gemological laboratories. It’s our promise of quality, transparency, and peace of mind.
Explore why certification matters.
