Oval lab-grown diamond engagement ring with marquise side stones in yellow gold

The Holiday Event · Nov 4 – Dec 5

Forever,
Gifted

15% off sitewide with code HOLIDAY15, plus a complimentary lab diamond gift on orders over $2,000.

Shop the Holiday Event

The Holiday Event

15% Off A Free Diamond Gift

15% off sitewide with code HOLIDAY15. Complimentary diamond gifts are added automatically on orders over $2,000.

Sitewide

15% Off

On everything, from engagement rings to everyday fine jewelry. Use code HOLIDAY15 at checkout.

Spend $2,000+

15% Off

Complimentary lab-grown diamond pendant in sterling silver

Free Diamond Pendant

$318 value

A complimentary ¼ ct lab-grown diamond pendant in 925 sterling silver, added automatically.

Best value

Spend $3,000+

15% Off

Complimentary lab-grown diamond stud earrings in 10K solid gold

Free Gold Diamond Studs

$520 value

A complimentary pair of 0.6 ctw lab-grown diamond stud earrings in 10K solid gold, added automatically.

  • Delivered by Christmas Order by December 5
  • Free Shipping US, UK, Canada & Australia · No extra fees on US delivery
  • IGI Certified Diamonds On individual diamonds 0.5ct and above
Shop the Holiday Event

Offers valid Nov 4 – Dec 5, 2026. One discount code per order; HOLIDAY15 cannot be combined with other discount codes. Gifts are added automatically to qualifying orders, one gift per order, while supplies last.

Lab Grown Diamond Engagement Rings & Fine Jewelry Carat Freedom

Designer engagement rings made to be worn every day, not just on the big day. Fine jewelry under $1,000 for effortless everyday luxury. And our Signature Collection, for statement lab-grown diamonds and true carat freedom.

Shop Engagement Rings by Diamond Shape

Oval Diamond Engagement Ring

Oval

Round Diamond Engagement Ring

Round

Emerald Diamond Engagement Ring

Emerald

Marquise Diamond Engagement Ring

Marquise

Radiant Diamond Engagement Ring

Radiant

Pear Diamond Engagement Ring

Pear

Elongated Cushion Diamond Engagement Ring

Elongated Cushion

Heart Diamond Engagement Ring

Heart

Asscher Diamond Engagement Ring

Asscher

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Chosen for life's biggest moments.

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The Leonids Standard

From the first consultation to the ring on your finger, every step is guided by clear standards.

Design consultation

Design Consultation

We help you choose the right style, diamond shape, and setting for your story, so every detail feels personal from the start.

Diamond sourcing

Diamond Sourcing

Every diamond is selected against a clear standard for color, clarity, and cut, so you always know exactly what you're getting.

Precision crafting

Precision Crafting

Your ring is crafted by hand, shaped and set with care to bring the design to life.

Personalized engraving

Personalized Engraving

Add a meaningful touch with complimentary engraving, a name, a date, or a few words that make the ring truly yours.

Quality check

Quality Check

Each piece goes through a five-step inspection, covering metal purity, structural integrity, stone certification, and finish, before it ever leaves our hands.

Certified and delivered

Certified & Delivered

Your ring arrives with the right certification for its diamond, IGI for stones 0.5 carats and above, AGL for finished pieces under 0.5 carats, plus free insured shipping and a one-year warranty.

FAQs


Yes. A lab-grown diamond is a real diamond, with essentially the same chemical, physical and optical properties as a mined diamond. The only difference is its origin: it grows in a controlled lab instead of underground. Source: FTC. GIA. USGS. 

We design lab-grown diamond and moissanite jewelry in solid gold and platinum. Every piece is made to be worn every day, from engagement rings to everyday fine jewelry.

Every piece is made to order. Production takes about 15 business days, and US delivery takes a further 3–5 business days. Rush production is available if you need your piece sooner. Planning a proposal or anniversary? Contact us and we’ll help you plan around your date.

Order your best guess. Every ring includes one free resizing, so you can get the fit just right. Not sure where to start? See our Ring Size Guide or reply to us for help.

We stand behind every piece we make. US orders can be returned within 30 days of delivery for a full refund, with no restocking fees. Engraved and personalized pieces, and international orders, have different return terms. See our Return Policy for full details.

Shipping is free to the US, UK, Canada and Australia, and US orders arrive with nothing extra to pay on delivery. For orders shipped outside the US, including the UK, Canada and Australia, import duties and taxes are not included and are charged by the carrier or customs office on arrival. See our Shipping Policy for details.

Yes. Individual lab-grown diamonds 0.5ct and above come with an IGI certificate, so you know exactly what you’re buying.

Yes. Every piece comes with a one-year warranty, starting on the day your package is delivered. There’s nothing to register; just keep your order number for any warranty requests.

Carat Freedom is Leonids’ factory-direct pricing approach. We manage production ourselves and remove the traditional wholesale and retail markups, so more of your budget goes toward the diamond, metal, setting and finish. It doesn’t mean lower quality: our lab-grown center diamonds are D–E color and VS–VVS clarity, and every finished piece passes a quality inspection before it ships. Learn more about our quality standards.

Learn Before You Buy

A Little Guidance Goes a Long Way.

Practical guidance for choosing the right diamond shape, setting, carat size, and ring fit with confidence.

Free Shipping

Free One-year Warranty

IGl-Certified Diamonds

Free Ring Resizing

30-Day Easy Return

Buy Now Pay later