Lab grown diamond engagement ring with cushion cut center diamond – Unii JewelsCushion cut lab grown diamond engagement ring on champagne satin – Unii Jewels

IGI Certified Lab Grown Diamonds

Lab Grown Diamond Engagement Rings
Luxury diamonds without the luxury markup. Ethical, brilliant and handcrafted fine jewelry.
Woman wearing lab grown diamond necklace, drop earrings and tennis bracelet – Unii JewelsWoman wearing lab grown diamond statement earrings and necklace – Unii Jewels

Ethical Luxury Jewelry

Lab Grown Diamond Earrings, Necklaces & Bracelets
Brilliant diamonds crafted for everyday elegance.
Woman wearing lab grown diamond statement earrings and necklace – Unii JewelsLab grown diamond necklace, tennis bracelet, engagement rings and drop earrings – Unii Jewels
Fine Lab Grown Diamond Jewelry
Brilliant diamonds crafted into elegant rings, earrings, necklaces and bracelets for modern luxury.
1/3
Premium Craftsmanship
Ethical sourcing and manufacturing
Sustainable heirlooms
Timeless pieces to treasure forever
Luxury Essentials
Designed to Shine
Premium Craftsmanship
Ethical sourcing and manufacturing
Sustainable heirlooms
Timeless pieces to treasure forever
Luxury Essentials
Designed to Shine
Premium Craftsmanship
Ethical sourcing and manufacturing
Sustainable heirlooms
Timeless pieces to treasure forever
Luxury Essentials
Designed to Shine
Premium Craftsmanship
Ethical sourcing and manufacturing
Sustainable heirlooms
Timeless pieces to treasure forever
Luxury Essentials
Designed to Shine
Premium Craftsmanship
Ethical sourcing and manufacturing
Sustainable heirlooms
Timeless pieces to treasure forever
Luxury Essentials
Designed to Shine
Premium Craftsmanship
Ethical sourcing and manufacturing
Sustainable heirlooms
Timeless pieces to treasure forever
Luxury Essentials
Designed to Shine

Shop by Category

UNII JEWELS Collection

Experience the essence and discover the true meaning of luxury, redefined.

Rings

179 products

Necklace

31 products

Earrings

79 products

Bracelets

33 products

Shop by Styles

Discover Styles

Discover diverse engagement ring styles, each embodying a distinct symbol of love & devotion

14 Days of Process

Truly Custom Ring

Receive your Truly Custom Ring in as little as 14 days from your purchase. Receive your truly custom ring. Your Inspiration has come to life.

Before
After

Ethically crafted IGI-certified lab-grown diamond jewelry designed for brilliance, beauty, and everyday luxury.

Why Choose Unii Jewels

Shop IGI-certified lab-grown diamond jewelry handcrafted for brilliance, ethical sourcing, and timeless elegance. Discover engagement rings, earrings, necklaces, and bracelets designed to last a lifetime.

IGI Certified Diamonds

Every diamond is independently IGI certified for verified quality, exceptional brilliance, and complete transparency.

Ethically Sourced

Our lab-grown diamonds deliver exceptional beauty while supporting a more sustainable, responsible, and environmentally conscious future.

Handcrafted Excellence

Every jewelry piece is handcrafted by skilled artisans with exceptional attention to detail, precision, and lasting quality.

Custom Jewelry

Create personalized engagement rings and fine jewelry designed to reflect your unique style and unforgettable moments.

Unii Jewels

4.9 148 reviews
  • Emily Carter – Austin, TX
    Emily Carter – Austin, TX
    January 14, 2026
    Customer review photo
    I was honestly nervous ordering a ring online, but this exceeded my expectations. The sparkle is unreal and it looks even better in person. My fiancé hasn’t stopped staring at it. Shipping was faster than expected too!
  • Jason Miller – Denver, CO
    Jason Miller – Denver, CO
    December 3, 2025
    Customer review photo
    Gorgeous stone! I never thought I could ever have a real diamond of this size and beauty! Great Service and Communications and Fast Delivery Too! Thank You for the High Quality Lab Grown Diamond! Great working with Unii!
  • Brandon Lee – Seattle, WA
    February 8, 2026
    Customer review photo
    Great communication and even better product. The ring looks exactly like the photos. Very clean finish and solid weight to it. Would purchase again without hesitation.
  • Olivia Thompson – Miami, FL
    Olivia Thompson – Miami, FL
    November 22, 2025
    Customer review photo
    Gorgeous earrings! I never thought I could own real diamond earrings of this size and beauty. The sparkle is absolutely stunning and they look even more amazing in person! Great service, clear communication, and super fast delivery too. Thank you for the high-quality lab grown diamonds it was a pleasure working with Unii!
  • Madison Brooks – Chicago, IL
    Madison Brooks – Chicago, IL
    October 17, 2025
    Customer review photo
    Absolutely in love with my ring! It’s elegant, classy, and super comfortable to wear daily. The packaging was also really nice which made the whole experience feel special.
  • Tyler Anderson – Charlotte, NC
    Tyler Anderson – Charlotte, NC
    September 29, 2025
    Customer review photo
    I did a lot of research before buying and I’m glad I chose this one. The diamond quality is impressive and the ring is perfectly polished. Great value for the price.

Expert answers about IGI Certified lab-grown diamonds, engagement rings, customization, and worldwide shipping.

Frequently Asked Questions

Find answers to common questions about our IGI Certified lab-grown diamonds, engagement rings, customization, shipping, certification, and jewelry care.

    Are lab-grown diamonds real diamonds?

    Yes. Lab-grown diamonds have the same chemical composition, brilliance, durability, and optical properties as mined diamonds. The only difference is that they are created in a controlled laboratory environment rather than extracted from the earth.

    Are your diamonds IGI certified?

    Many of our lab-grown diamonds are independently certified by IGI. Please refer to the individual product page to confirm whether a specific diamond includes IGI certification and to view its grading details.

    Do you ship to the USA?

    Yes. We offer secure international shipping, including delivery to the United States. Shipping times and charges vary depending on the destination and the product ordered.

    What metals do you offer?

    Our jewelry is available in a selection of premium metals, including 10K, 14K, and 18K gold in yellow, white, and rose finishes, as well as platinum. Availability depends on the specific design.

    Can I customize a ring?

    Yes. Many of our engagement rings can be customized by selecting your preferred diamond shape, carat weight, precious metal, and ring size. Custom design options may also be available.

    How long does shipping take?

    Delivery time depends on the jewelry design, customization requirements, and shipping destination. Estimated production and shipping timelines are shown during checkout or on the product page.

    Do lab-grown diamonds hold their value?

    Lab-grown diamonds are purchased for their beauty, quality, and value. Like most jewelry, resale value can vary based on market conditions and product specifications.

    Do you accept returns?

    Eligible products can be returned according to our return policy. Customized or personalized jewelry may have different return conditions. Please review our Return Policy for complete details.

    Is every diamond certified?

    Certification depends on the product selected. Where a diamond is described as IGI certified, independent grading documentation is included. Please check the product details for certification information.

    Do you offer ring resizing?

    Ring resizing is available for many eligible designs. Certain ring styles, such as full eternity bands, may have resizing limitations. Please contact us before placing your order if you have sizing questions.

    What diamond shapes do you offer?

    We offer a wide selection of lab-grown diamond shapes, including round, oval, pear, emerald, radiant, princess, cushion, marquise, heart, Asscher, and more. Shape availability varies by design.

    Can I choose the diamond carat weight?

    Yes. Many of our jewelry designs are available in multiple carat weights, allowing you to choose the size that best fits your style and budget.

    Are lab-grown diamonds eco-friendly?

    Lab-grown diamonds generally have a lower environmental impact than mined diamonds because they avoid traditional mining. Environmental impact can vary depending on the production process and energy sources used.

    Is your jewelry suitable for everyday wear?

    Yes. Our fine jewelry is designed for everyday elegance using high-quality materials. We recommend following proper jewelry care guidelines to help maintain its beauty over time.

    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 to help prevent scratches, and have it professionally inspected from time to time if needed.

    Our Best Service for You

    Hear from our happy customers about their experience

    Customization Services

    Customization Services

    Certified Quality

    Certified Quality

    Free Consultation

    Free Consultation

    Fast Delivery

    Fast Delivery

    Global Shipping

    Global Shipping

    After-Sales Support

    After-Sales Support

    HAVE A QUESTION ABOUT YOUR DREAM RING?

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    • We're here to bring your dream ring to life.
    • Whether you need help selecting a diamond, customizing a design, or have any other questions- our jewelry experts are ready to guide you.
    • Fill out the form below, and we'll get back to you within 24 hours.