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Best Lab Diamonds

Best lab diamonds have become the new norm, offering consumers up to 75% savings off natural diamonds without compromising quality. Furthermore, these stones are ethically mined so those concerned about the environment should definitely give them some consideration.

To guarantee you get the best value, we’ve identified seven of our top online jewelry retailers that offer high-quality lab diamonds at prices you can afford.

James Allen

James Allen was one of the first online retailers to sell lab diamonds and boasts some of the best customer service in the industry.

James Allen boasts an expansive inventory of lab-created diamonds, offering more choice than most specialized sellers on the market. Their selection includes an impressive variety of sizes, cuts, colors and prices to suit any budget.

They offer an expansive selection of settings in various styles and metals. Their setting designs can all be viewed in 360-degree videos for added enjoyment.

These setting designs are available for both loose diamonds and engagement rings. This means you can visualize your stone and design before you make a purchase, providing added peace of mind.

The company provides a lifetime warranty that covers cleaning, repolishing, prong tightening and rhodium plating. Furthermore, they provide free resizing for the first year and allow customers to trade-in their diamonds for 100% credit towards a new diamond of at least double its value.

Blue Nile

Blue Nile is one of the world’s premier online diamond and jewelry retailers. They provide an extensive selection of certified conflict-free diamonds, lab-grown diamonds, engagement rings, and wedding bands at competitive prices.

Blue Nile offers an expansive selection of loose diamonds, along with a lifetime warranty and upgrade program for your ring purchase. Furthermore, they have a price match policy in place for customers who discover lower prices on the same diamond elsewhere.

However, you may need to meet certain conditions for the policy to take effect. This could include limitations based on a competitor’s return policy, shipping costs and product availability.

Lab-created diamond UK offers an eco-friendly alternative to mined diamonds, offering the same brilliance and sparkle at a much more cost-effective price point. They come in an assortment of shapes and sizes such as round, princess, cushion, and heart-shaped diamonds.

Lark And Berry

Lark And Berry is a sustainable jewellery brand featuring cultured diamonds. Their pieces are playful, modern, yet still grounded in classic craftsmanship for lasting beauty.

The brand’s signature lab-grown diamonds are created using HPHT (High Pressure High Temperature) technology that mimics natural diamond formation in the earth. Furthermore, they use 100% renewable energy to grow the stones.

Ethically and environmentally friendly, buying an ethical diamond requires no mining. Prices tend to be around 30% less than mined diamonds, plus all diamonds are fully traceable.

Laura Chavez, the founder of Cult Diamonds, first encountered cultured diamonds while studying jewellery at Hatton Garden. She was immediately intrigued by their ethical story and price advantages but quickly realized there wasn’t much available out there for purchase.


Are you searching for the ideal gift for your partner or something that will stand the test of time? Keyzar has all of your laboratory diamond needs covered. With over 7,800 available options, they guarantee to have something to suit every taste and budget.

Cut is essential for maximizing sparkle and brilliance of natural diamonds. If not handled with care, natural diamonds may become dark and dull in appearance.

Cut well-cut diamonds maximize light refraction and sparkle, so they make for a larger stone with greater carat weight. However, to maximize carat value, cutters often compromise on the cut to achieve this reflected light reflection.

Unfortunately, growing a stunning, colorless diamond in a lab setting is quite challenging. It takes considerable effort and skill to produce high-quality lab diamonds; unfortunately, some growers take shortcuts with excessive HPHT treatment or irradiation which often results in poorly included stones.


If you’re willing to bend the 4Cs a bit, you can get a shinier and more sparkle diamond for half the cost of an organically mined one.

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