Why Choose Lab Diamonds?
Clear, practical guidance to help you understand lab diamonds and shop with confidence.
Lab diamonds have changed the way many people shop for diamond jewelry. They offer the beauty, brilliance, durability, and visual presence associated with diamonds while giving shoppers more flexibility when balancing size, quality, style, and budget. For someone comparing a larger center stone, a substantial pair of studs, or a diamond-intensive tennis bracelet, that flexibility can dramatically expand the available choices.
The most important thing to understand: a lab-grown diamond is a diamond, not a diamond imitation. Laboratory-grown diamonds have essentially the same chemical composition, crystal structure, physical properties, and optical characteristics as natural diamonds. The primary distinction is how and where they formed.
Lab Diamonds Are Real Diamonds
One of the most common misconceptions about lab diamonds is that they are similar to cubic zirconia or moissanite. They are not. Those materials are diamond simulants: they may resemble diamonds visually, but they have different chemical and physical properties.
Laboratory-grown diamonds are crystalline carbon and possess essentially the same chemical, physical, and optical properties as natural diamonds. The Gemological Institute of America notes that the two can appear virtually identical and often require advanced gemological equipment to reliably distinguish their origin.
That means a properly cut lab diamond can display the same combination of brilliance, fire, scintillation, hardness, and durability that makes diamond such an enduring choice for fine jewelry.
More Diamond for the Budget
For many shoppers, the most immediate advantage of lab diamonds is value. Lab-grown diamonds generally sell for significantly less than natural diamonds with comparable size and quality characteristics.
That difference can allow a shopper to make different tradeoffs. Someone considering a one-carat natural diamond may decide that a larger lab diamond better fits the look they want. Another shopper may keep the same carat weight and instead prioritize a higher color or clarity grade, a more elaborate setting, or a heavier precious-metal design.
Go Larger
Lab diamonds can make larger center stones and higher total carat weights accessible within a wider range of budgets.
Upgrade Quality
A shopper may choose to prioritize cut, color, clarity, or overall visual performance rather than simply minimizing price.
Choose More Diamond-Intensive Designs
Tennis bracelets, tennis necklaces, multi-stone rings, and statement earrings can require substantial total diamond weight.
Spend More on the Setting
The diamond budget can sometimes leave more room for platinum, intricate craftsmanship, side stones, or distinctive design details.
Exceptional Brilliance Is Still About Cut
Whether a diamond formed beneath the earth or in a laboratory, beauty depends heavily on how the finished stone interacts with light. Cut quality, proportions, symmetry, polish, shape, and facet arrangement all contribute to what the eye ultimately sees.
A larger carat weight does not automatically mean a more beautiful diamond. An exceptionally well-cut diamond can appear lively, bright, and balanced, while a poorly proportioned stone can lose light even if its color and clarity grades look impressive on paper.
This is why comparing lab diamonds should involve more than simply finding the largest stone available for the price. Shape, dimensions, cut quality, color, clarity, and the overall design of the jewelry all matter.
Lab Diamonds Work Across Nearly Every Jewelry Category
Lab diamonds are no longer limited to solitaire engagement rings. They now appear throughout fine jewelry, making the category useful for both milestone purchases and everyday pieces.
- Lab diamond engagement rings and solitaire rings
- Lab diamond stud earrings
- Lab diamond hoop and drop earrings
- Lab diamond tennis bracelets
- Lab diamond tennis necklaces
- Lab diamond pendants and necklaces
- Lab diamond fashion rings
- Lab diamond bangles and statement bracelets
- Multi-stone and three-stone designs
- Men’s lab diamond jewelry
For pieces that use many diamonds, the economics can be particularly noticeable. A tennis necklace or bracelet may contain dozens of individually matched stones, while a pavé-intensive ring may require a large number of smaller diamonds. Lab-grown diamonds can make these high-diamond-content designs available across a broader range of price points.
More Freedom to Choose the Look You Actually Want
Diamond shopping traditionally involves compromise. A shopper may begin with a preferred carat weight and then adjust color, clarity, cut, metal, or setting style until the purchase fits the budget.
Lab diamonds can change that equation. Instead of asking only, “What can I afford?” shoppers often have more room to ask, “What do I actually like?”
That may mean choosing an elongated oval instead of a smaller round diamond, a larger emerald cut with dramatic finger coverage, a three-stone ring instead of a solitaire, or a substantial pair of diamond studs that creates more visual impact.
A Wide Range of Diamond Shapes
Lab diamonds are available in many of the same popular shapes as natural diamonds. Each shape creates a different balance of sparkle, outline, finger coverage, and personality.
Round
Classic, highly brilliant, and exceptionally versatile.
Oval
Elongated and elegant, with excellent visual spread.
Emerald
Clean step facets create a sophisticated hall-of-mirrors appearance.
Pear
A distinctive teardrop silhouette combining softness and drama.
Radiant
Brilliant faceting with a crisp rectangular or square outline.
Cushion
Rounded corners and a romantic silhouette with many facet variations.
Other possibilities include princess, marquise, Asscher, heart, and specialty cuts. The best diamond shape is ultimately the one that works with the wearer’s style and the jewelry design.
Lab Diamonds Are Durable Enough for Everyday Fine Jewelry
Diamond is valued not only for brilliance but also for exceptional hardness. Laboratory-grown diamonds share the same basic crystal structure and durability associated with natural diamond, making them appropriate for rings, earrings, bracelets, necklaces, and other pieces designed for regular wear.
As with all fine jewelry, however, durability depends on more than the gemstone. Prongs, clasps, chains, settings, and precious metals should be cared for appropriately and inspected periodically, especially on jewelry worn every day.
How Lab Diamonds Are Made
Most gem-quality laboratory-grown diamonds are produced using one of two major technologies: High Pressure High Temperature, commonly called HPHT, or Chemical Vapor Deposition, commonly called CVD.
HPHT
High Pressure High Temperature growth recreates conditions involving intense pressure and heat that allow carbon to crystallize as diamond.
CVD
Chemical Vapor Deposition uses a carbon-rich gas and a diamond seed, allowing carbon atoms to accumulate and form diamond crystal over time.
These growth histories leave subtle characteristics that advanced gemological laboratories can detect. To the unaided eye, however, a high-quality lab diamond and natural diamond may be extremely difficult or impossible to distinguish by appearance alone.
Lab Diamonds Can Be Independently Evaluated
As with natural diamonds, lab-grown diamonds can be assessed for characteristics such as color, clarity, carat weight, proportions, polish, symmetry, and other quality factors. Gemological laboratories use specialized equipment to confirm laboratory origin as well as evaluate quality.
Independent documentation can be especially useful for significant center stones because it gives the shopper standardized information for comparison. Depending on the grading laboratory and report type, the diamond may also have a microscopic laser inscription on its girdle identifying the report number and laboratory-grown origin.
Important: a grading report is not the same thing as an appraisal. A grading report describes gemological characteristics. An appraisal addresses value for a specific purpose and date.
Lab Diamonds vs. Natural Diamonds Is a Personal Choice
Choosing a lab diamond does not mean that natural diamonds are obsolete, and choosing a natural diamond does not make lab diamonds inferior. They appeal to shoppers for different reasons.
Natural diamonds offer geological rarity, extraordinary age, and a formation history measured in millions or billions of years. Lab diamonds offer the same fundamental diamond material with a modern origin and a substantially different pricing structure.
Some shoppers are deeply drawn to the rarity and geological story of a natural diamond. Others care more about maximizing size, appearance, or jewelry design for their budget. Neither preference needs to be treated as universally correct.
For a detailed comparison, visit Lab vs. Natural Diamonds.
What About Resale Value?
Lab diamonds should generally be purchased because you want to own and enjoy the jewelry, not because you expect the diamond itself to appreciate.
Pricing for laboratory-grown diamonds has changed substantially as production technology and supply have expanded. Natural diamonds also should not automatically be treated as financial investments, but the secondary markets for natural and lab-grown diamonds behave differently.
If future resale value is an important part of the purchase decision, it deserves consideration before buying rather than after. The enjoyment, appearance, craftsmanship, and suitability of the jewelry should usually be the primary reasons for choosing a lab diamond piece.
What Should You Look for in a Lab Diamond?
The best lab diamond is not simply the one with the highest grades. A balanced purchase considers the factors that actually affect appearance and how the stone will be worn.
- Cut and visual performance: prioritize a lively, attractive diamond.
- Shape: choose the outline that fits the design and wearer.
- Carat and dimensions: compare physical measurements, not just weight.
- Color: consider how much warmth is visible in the selected shape and metal.
- Clarity: many shoppers prioritize an eye-clean appearance over chasing extremely high grades.
- Certification or assessment: review available independent documentation for significant stones.
- Setting quality: the mounting, metal, craftsmanship, and proportions matter just as much as the center diamond.
The 4Cs of Diamonds and the Lab Diamond Buying Guide provide a deeper look at these factors.
Who Should Consider a Lab Diamond?
Lab diamonds can make particular sense for shoppers who want a larger visual presence, a high total carat weight, or a diamond-intensive piece while remaining within a defined budget.
They can also be a compelling choice for buyers who simply prefer modern diamond technology or who see the diamond primarily as a beautiful material rather than as a geological rarity.
Common scenarios include upgrading diamond studs, choosing a larger anniversary ring, purchasing a substantial tennis bracelet, creating a dramatic engagement ring, or selecting an everyday diamond necklace without placing as much of the budget into the rarity premium associated with natural diamonds.
Why Shop Lab Diamonds at Robinson’s Jewelers?
Robinson’s Jewelers carries an extensive selection of fine jewelry, including a growing range of lab diamond rings, earrings, necklaces, bracelets, tennis jewelry, and other designs. The breadth of the catalog makes it possible to compare many different looks, sizes, settings, metals, and price points rather than being limited to a handful of predetermined options.
Robinson’s Jewelers is family-owned by Andrew and Tracy Robinson and has served more than 35,000 clients. Owner Andrew Robinson is a GIA Gemologist, adding professional gemological knowledge to the process of selecting and evaluating diamond jewelry.
For shoppers who want the brilliance and durability of diamond together with greater flexibility in size, quality, and design, lab-grown diamonds provide an increasingly compelling option.
Frequently Asked Questions About Lab Diamonds
Are lab diamonds real diamonds?
Yes. Laboratory-grown diamonds have essentially the same chemical composition, crystal structure, physical properties, and optical properties as natural diamonds. They are different from diamond simulants such as cubic zirconia and moissanite.
Can you tell a lab diamond from a natural diamond by looking at it?
Usually not reliably. Advanced gemological testing can identify differences associated with growth history, but appearance alone is generally not enough to determine origin.
Are lab diamonds as hard as natural diamonds?
Yes. Lab-grown diamonds share diamond's exceptional hardness and are suitable for everyday fine jewelry when properly set and cared for.
Why are lab diamonds usually less expensive?
Laboratory production does not involve the same geological rarity and mining supply chain as natural diamonds. Production technology and expanding supply have also contributed to lower market pricing.
Do lab diamonds look different?
A well-cut lab diamond can display the brilliance, fire, and sparkle associated with diamond. Visual quality depends on the individual stone’s cut, proportions, color, clarity, and other characteristics rather than origin alone.
Do lab diamonds have grading reports?
Many significant lab diamonds are accompanied by independent laboratory reports or quality assessments describing their characteristics and confirming laboratory-grown origin.
Find Your Lab Diamond Jewelry
Shop rings, earrings, necklaces, bracelets, tennis jewelry, and newly added lab diamond designs.