Are lab-grown diamonds real diamonds?

Yes. Lab-grown diamonds are real diamonds with the same chemical, physical, and optical properties as mined diamonds. The only difference is that they are created in a laboratory instead of being mined from the earth.

Are your diamonds IGI certified?

Yes. Our diamonds are independently certified by the International Gemological Institute (IGI), providing confidence in their quality and authenticity.

Do you ship to the USA?

Yes. We offer secure worldwide shipping, including fast and fully insured delivery to customers across the United States.

What metals do you offer?

Our jewelry is available in 10K, 14K and 18K gold in white, yellow and rose finishes, as well as platinum on selected designs.

Can I customize a ring?

Yes. You can customize your jewelry by selecting the diamond shape, carat weight, precious metal and other design details to create a personalized piece.

How long does shipping take?

Most orders are handcrafted and shipped within the estimated production time shown on the product page. Delivery times vary depending on your location.

Do lab-grown diamonds hold value?

Lab-grown diamonds are valued for their beauty, durability and affordability. Resale values can vary based on market demand and individual circumstances.

Do you accept returns?

Yes. We offer returns according to our return policy. Please review the Returns Policy page for complete eligibility and conditions.

Is every diamond certified?

All eligible center diamonds are independently certified by IGI. Certification details are provided on the relevant product pages.

Do you offer ring resizing?

Yes. Ring resizing is available for many designs. Please contact our customer support team for resizing options and eligibility.

What diamond shapes do you offer?

We offer round, oval, pear, emerald, radiant, princess, cushion, marquise, heart, Asscher and many other popular diamond shapes.

Can I choose the diamond carat weight?

Yes. Many of our jewelry designs are available in multiple carat weights so you can choose the option that best suits your style and budget.

Are lab-grown diamonds eco-friendly?

Lab-grown diamonds generally have a lower environmental impact than traditionally mined diamonds because they avoid conventional mining practices.

Is your jewelry suitable for everyday wear?

Yes. Our fine jewelry is designed for everyday elegance using high-quality craftsmanship and durable precious metals.

How do I care for my lab-grown diamond jewelry?

Clean your jewelry regularly using warm water, mild soap and a soft brush. Store each piece separately and have it professionally inspected periodically to maintain its beauty.

No tariff or duty — all included in price.

Enjoy Free Insured Worldwide Shipping

FREE Stud Earring on Purchase over $3000

Collection: Best Sellers

Explore the Best Selling Lab Grown Diamond Jewelry from Unii Jewels, bringing together popular engagement rings, diamond earrings, necklaces, bracelets, eternity rings and other fine-jewelry designs in one collection. From timeless solitaire rings and diamond studs to statement necklaces and contemporary two-stone designs, discover customer-favorite styles crafted with lab grown diamonds for engagements, anniversaries, gifts and everyday fine-jewelry wear.