Lab-grown diamonds (also called lab-created, lab-made, or synthetic diamonds) are real diamonds β chemically, physically, and optically identical to mined diamonds. Theyβre produced in laboratories using high-pressure, high-temperature (HPHT) or chemical vapor deposition (CVD) processes that mimic how natural diamonds form in the Earthβs mantle.
Why People Choose Lab Diamonds
β More affordable: Typically 30β70% cheaper than similar mined diamonds.
β Ethical & sustainable: Conflict-free with a smaller environmental impact.
β Same brilliance and durability: They score a 10 on the Mohs hardness scale β just like natural diamonds.
β Wide variety: Available in many cuts, sizes, and settings.
Lab diamonds are graded just like mined diamonds based on the 4Cs β Cut, Color, Clarity, and Carat β and reputable sellers include certification from labs like GIA, IGI, or AGS.
π Top Online Retailers for Lab Diamonds
Below are some of the most popular, trusted, and best-selling websites where you can shop lab-grown diamonds β from engagement rings to loose stones.
β 1. Blue Nile
β‘οΈ https://www.bluenile.com/diamonds/lab-grown
Great overall selection and customization tools. GIA-graded stones and extensive settings. Often highlighted as a top choice for quality and service.
π 2. James Allen
β‘οΈ https://www.jamesallen.com/diamonds/lab-grown/
Known for 360Β° high-magnification viewing β you can see every detail of the diamond. Huge inventory of lab diamonds and settings. Excellent interactive shopping tools.
πΏ 3. Brilliant Earth
β‘οΈ https://www.brilliantearth.com/lab-grown-diamonds/
Strong focus on ethical sourcing and sustainability. Virtual appointments and custom design. Mix of classic and modern jewelry pieces.
π« 4. Clean Origin
β‘οΈ https://www.cleanorigin.com/collections/lab-grown-diamonds/
Specializes only in lab diamonds. Transparent pricing and generous return policies. Environmentally conscious brand.
π‘ 5. Ritani
β‘οΈ https://www.ritani.com/
Combines online convenience with option for in-store previews. High transparency and easy custom builds. Good balance of price and quality.
π 6. Rare Carat
β‘οΈ https://www.rarecarat.com/
A diamond search engine that compares stones across sellers. Helpful filters and pricing transparency. Good resource to shop and compare deals.
π 7. Diamonds Factory
β‘οΈ https://www.diamondsfactory.com/diamond-rings/lab-diamond
Wide range of pre-set lab diamond rings. Affordable options and classic designs.
πΎ 8. Silveroni
β‘οΈ https://www.silveroni.com/
Certified diamonds (IGI) and customizable options. Fast shipping across the USA. Good choice for classic solitaire and halo rings.
π§ Shopping Tips for Lab Diamonds
β Always check certification: Diamonds should come with a lab report from GIA, IGI, or AGS.
β Inspect online visuals: High-resolution photos or 360Β° videos help ensure you know exactly what youβre buying.
β Understand return policies: Look for flexible returns (30β100 days) and warranties.
β Know your 4Cs: Quality and price vary depending on cut, color, clarity, and carat weight.
πͺ© Conclusion
Lab-grown diamonds offer a beautiful, ethical, and cost-effective alternative to mined diamonds. Whether youβre buying an engagement ring, earrings, or loose stones, the online retailers above are among the most reputable and best-selling places to shop today. By comparing options and checking certifications, you can find exactly the diamond you want β without breaking the bank.