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Rated “Excellent” by Shopper Approved®
5.0
(47 reviews)
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Lab Grown
Diamond Necklaces
The huge diamond look without the
huge diamond price tag

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FREE Returns

Buy now, Pay later

Lab Grown Diamond Necklace

The huge diamond look without the huge diamond price tag

FREE Shipping

FREE Returns

Buy Now, Pay Later

FREE Protection Plan

Best Price Guaranteed

Guaranteed for Life

FREE Shipping

FREE Returns

Buy now, Pay later

Lab Grown Diamond Necklaces

Explore The Smartest Way To Save On Size & Sparkle On Lab Created Diamond Necklaces

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Throne Lab Grown Marquise DIamond Tennis NecklaceThrone Lab Grown Marquise DIamond Tennis Necklace
Customer Reviews

Alexis L.

United State

I would definitely recommend La Joya

I would definitely recommend La Joya

Janelle G.

United State

Very very pretty

Very very pretty

Sydney A.

United State

I am never going back to natural diamonds

I am never going back to natural diamonds

Teri E.

United State

I think the sparkle is just incredible

I think the sparkle is just incredible

Miranda G.

United State

I am just absolutely obseesed

I am just absolutely obseesed

T. A. Ruff

United State

I am still in so much shock on how good this jewelry set looks

I am still in so much shock on how good this jewel ...Read More

Close up of a brilliant round-cut loose lab-grown diamond sparkling under direct light.

The Jeweler to the Jewelers

For years, we supplied diamonds to the world’s most prestigious brands. Now, we are opening the vault directly to you. By removing the middleman, we guarantee a bigger, brighter diamond at the true insider price. And because we are the source, we offer unmatched protection: we maintain your jewelry for free, and if it’s ever lost, we replace it.

Best Price Guarantee

Lifetime Warranty

Lost Jewelry Replacement

A purple line-art icon of a hand holding a coin with a dollar sign, representing La Joya's best price guarantee.

Best Price
Guarantee

A purple line-art icon of a person's silhouette integrated with an infinity symbol, representing La Joya's lifetime warranty.

Lifetime
Warranty

A purple line-art icon of a diamond ring featuring a question mark in the center of the stone, representing La Joya's lost jewelry replacement program.

Lost Jewelry
Replacement

Heirloom Quality. Radical Honesty

We believe you shouldn’t have to choose between your values and your dream ring. La Joya was born to disrupt the industry with a simple promise: luxury without compromise. We combine world-class design with 100% conflict-free, responsibly sourced diamonds. We refuse to cut corners on sourcing, sparkle, or service—so you never have to.

100% Conflict-Free

IGI Certified

Free Shipping & Returns

A purple line-art icon of a globe topped with a small leaf, representing La Joya's commitment to 100% conflict-free lab-grown diamonds.

100%
Conflict-Free

A purple line-art icon of a shield containing a checkmark, representing La Joya's IGI certified lab-grown diamonds.

IGI
Certified

A purple line-art icon of an open shipping box, representing La Joya's free shipping and returns policy for lab-grown diamond jewelry.

Free Shipping
& Returns

Close up of a brilliant round-cut loose lab-grown diamond sparkling under direct light.

The Jeweler to the Jewelers

For years, we supplied diamonds to the world’s most prestigious brands. Now, we are opening the vault directly to you. By removing the middleman, we guarantee a bigger, brighter diamond at the true insider price. And because we are the source, we offer unmatched protection: we maintain your jewelry for free, and if it’s ever lost, we replace it.

A purple line-art icon of a hand holding a coin with a dollar sign, representing La Joya's best price guarantee.

Best Price Guarantee

A purple line-art icon of a person's silhouette integrated with an infinity symbol, representing La Joya's lifetime warranty.

Lifetime Warranty

A purple line-art icon of a diamond ring featuring a question mark in the center of the stone, representing La Joya's lost jewelry replacement program.

Lost Jewelry Replacement

Heirloom Quality. Radical Honesty

We believe you shouldn’t have to choose between your values and your dream ring. La Joya was born to disrupt the industry with a simple promise: luxury without compromise. We combine world-class design with 100% conflict-free, responsibly sourced diamonds. We refuse to cut corners on sourcing, sparkle, or service—so you never have to.

A purple line-art icon of a globe topped with a small leaf, representing La Joya's commitment to 100% conflict-free lab-grown diamonds.

100% Conflict-Free

A purple line-art icon of a shield containing a checkmark, representing La Joya's IGI certified lab-grown diamonds.

IGI Certified

A purple line-art icon of an open shipping box, representing La Joya's free shipping and returns policy for lab-grown diamond jewelry.

Free Shipping & Returns

Structural Architecture of the Diamond Necklace

As the primary navigational hub for our fine jewelry collections, a foundational diamond necklace embodies timeless elegance and versatility. We meticulously engineer these diverse pendant designs to deliver exceptional brilliance and structural longevity. Choosing this core category allows you to explore an extensive array of high-quality, ethically sourced lab-grown diamond configurations. 

A dark purple line-art icon of a sparkling diamond, representing La Joya's 80% value advantage for lab-grown diamonds compared to mined stones.

Everyday Versatility of Pendant Designs

A beautifully crafted diamond necklace for women serves as the definitive, wear-everywhere structural staple for any modern wardrobe. This understated pendant design easily transitions from professional office environments to formal evening events without visually overwhelming the wearer. It effortlessly complements diverse fashion choices, making it an incredibly reliable, highly brilliant staple you will reach for daily. 

A dark purple line-art icon of a hand gently holding a sprouting plant, representing growth, trust, and La Joya's three generations of lab-grown diamond manufacturing lineage.

Chemical Authenticity of Lab-Grown Diamonds

Selecting a sustainable lab grown diamond necklace ensures your jewelry remains completely conflict-free and environmentally responsible. These authentic modern gems possess the exact identical chemical structure and absolute physical hardness of earth-mined stones. You receive fully certified, breathtaking optical brilliance while confidently supporting highly transparent, ethical fine jewelry manufacturing practices globally.

A dark purple line-art icon of a ribbon rosette seal featuring a diamond in the center, representing La Joya's secure and flexible payment options for lab-grown diamond jewelry.

Maximizing Optical Fire in Pendants

The minimalist architecture of a single stone or multi-stone setting eliminates unnecessary visual distractions, forcing ambient light directly through the gems. This highly focused structural engineering maximizes both internal fire and brilliant surface sparkle from every angle. It explicitly highlights the exceptional cut quality of the lab-grown stones, creating a profoundly dramatic optical display.

A dark purple line-art icon of a chemistry beaker, representing the scientific creation of lab-grown diamonds and La Joya's exclusive everyday discounts for community members.

Traditional Symbolism and Gifting

A spectacular gold and diamond necklace acts as an unforgettable, universally recognized geometric symbol for birthdays, graduations, or anniversaries. This traditional, elegant motif beautifully communicates enduring affection through pristine architectural focus. It functions as a deeply meaningful, heirloom-quality romantic gesture that the recipient will proudly wear and fiercely treasure forever. 

Technical Specifications and Styling Guide

Navigating our extensive inventory requires carefully evaluating precise diamond shapes, setting mechanics, metal alloys, and torso draping lengths. This comprehensive buyer’s guide walks you through essential gemological properties and structural components to customize your piece. Understanding these technical elements guarantees you confidently select an exceptionally brilliant accessory tailored perfectly to your exact specifications.

Gemological Evaluation of the Four C's

Prioritizing strict cut, color, and clarity grades remains absolutely paramount to visual success across all pendant types. We expertly maximize the geometric cut proportions of every lab-grown diamond to ensure spectacular light return. Understanding how these vital gemological properties interact guarantees you select an exceptionally brilliant, premium fine jewelry piece. 

Geometric Profiles of Fancy Diamond Shapes

The specific geometric cut of the center stone heavily dictates the overall structural personality of your jewelry. A traditional round brilliant maximizes pure optical fire, while elongated shapes provide a uniquely graceful drop. Alternatively, emerald and princess cuts introduce sharp, highly contemporary geometric lines for a distinctly modern, highly structured aesthetic.

Metallurgical Properties of Gold Alloys

The specific precious metal alloy visually anchors your spectacular lab-grown diamonds while providing essential structural durability and tensile strength. We meticulously cast these timeless designs in rich yellow gold, romantic rose gold, and highly durable white gold. Carefully matching this exact metal tone perfectly integrates your customized accessory with your existing jewelry collection.

Standard Chain Lengths and Torso Placement

Finding the optimal chain length correctly positions your radiant geometric centerpiece perfectly against your natural neckline. A delicate sixteen-inch chain ensures the gem sits high near the collarbone, while our three jump-ring options allow adjustments at 16, 17, or 18 inches for varying outfits. This versatile engineering guarantees optimal structural drape.

Layering Mechanics for Multi-Chain Styles

Creating a curated neck mess requires contrasting delicate chains with distinct structural profiles and varied drop lengths. You can easily pair a shorter choker with an 18-inch simple diamond necklace as a primary anchor. Mixing distinct precious metals creates a highly personalized, dynamic layered combination that flawlessly showcases your unique, expressive modern style seamlessly.

Independent Certification and Authentication

Every spectacular pendant we manufacture includes an independent gemological certificate from a recognized grading laboratory. This highly detailed physical document explicitly verifies the precise cut, color, clarity, and carat weight of your specific lab-grown diamond. This strict authentication process guarantees absolute transparency, ensuring your valuable fine jewelry investment perfectly matches rigorous industry specifications. 

Financing Options and Accessible Luxury

Acquiring your dream fine jewelry piece is made completely accessible through our tailored, flexible payment plans. Whether selecting a modest pendant or an elaborate design, our structured checkout options allow you to enjoy luxurious lab-grown brilliance without financial strain. This transparent purchasing path ensures exceptional quality remains entirely within your planned personal budget. 

Ultrasonic Cleaning and Safe Storage Protocols

Proper daily care guarantees your expressive pieces brilliantly retain their spectacular optical fire for many decades. We strictly recommend utilizing a soft brush with mild soap to gently remove any daily buildup from the intricate metalwork. Always store your delicate designs in soft-lined individual pouches to securely protect the fragile chain from structural tangling. 

Gemological Evaluation of the Four C's
Prioritizing strict cut, color, and clarity grades remains absolutely paramount to visual success across all pendant types. We expertly maximize the geometric cut proportions of every lab-grown diamond to ensure spectacular light return. Understanding how these vital gemological properties interact guarantees you select an exceptionally brilliant, premium fine jewelry piece.
Geometric Profiles of Fancy Diamond Shapes
The specific geometric cut of the center stone heavily dictates the overall structural personality of your jewelry. A traditional round brilliant maximizes pure optical fire, while elongated shapes provide a uniquely graceful drop. Alternatively, emerald and princess cuts introduce sharp, highly contemporary geometric lines for a distinctly modern, highly structured aesthetic.
Metallurgical Properties of Gold Alloys
The specific precious metal alloy visually anchors your spectacular lab-grown diamonds while providing essential structural durability and tensile strength. We meticulously cast these timeless designs in rich yellow gold, romantic rose gold, and highly durable white gold. Carefully matching this exact metal tone perfectly integrates your customized accessory with your existing jewelry collection.
Standard Chain Lengths and Torso Placement
Finding the optimal chain length correctly positions your radiant geometric centerpiece perfectly against your natural neckline. A delicate sixteen-inch chain ensures the gem sits high near the collarbone, while our three jump-ring options allow adjustments at 16, 17, or 18 inches for varying outfits. This versatile engineering guarantees optimal structural drape.
Layering Mechanics for Multi-Chain Styles
Creating a curated neck mess requires contrasting delicate chains with distinct structural profiles and varied drop lengths. You can easily pair a shorter choker with an 18-inch simple diamond necklace as a primary anchor. Mixing distinct precious metals creates a highly personalized, dynamic layered combination that flawlessly showcases your unique, expressive modern style seamlessly.
Independent Certification and Authentication
Every spectacular pendant we manufacture includes an independent gemological certificate from a recognized grading laboratory. This highly detailed physical document explicitly verifies the precise cut, color, clarity, and carat weight of your specific lab-grown diamond. This strict authentication process guarantees absolute transparency, ensuring your valuable fine jewelry investment perfectly matches rigorous industry specifications.
Financing Options and Accessible Luxury
Acquiring your dream fine jewelry piece is made completely accessible through our tailored, flexible payment plans. Whether selecting a modest pendant or an elaborate design, our structured checkout options allow you to enjoy luxurious lab-grown brilliance without financial strain. This transparent purchasing path ensures exceptional quality remains entirely within your planned personal budget.
Ultrasonic Cleaning and Safe Storage Protocols
Proper daily care guarantees your expressive pieces brilliantly retain their spectacular optical fire for many decades. We strictly recommend utilizing a soft brush with mild soap to gently remove any daily buildup from the intricate metalwork. Always store your delicate designs in soft-lined individual pouches to securely protect the fragile chain from structural tangling.

Core Lab-Grown Necklace Sub-Categories

Our signature collection explicitly highlights the industry’s most beloved structural pendant designs, beautifully balancing traditional elegance with exceptional structural integrity. From everyday minimalist solitaires to continuous brilliant strands, these represent our core architectural styles. Discover exactly how these specific sub-categories effortlessly serve diverse wardrobe functions and unique styling preferences for modern women. 

The Minimalist Solitaire Sub-Category

The definition of timeless elegance is found within our dedicated solitaire necklace collection, featuring a single brilliant stone. A suspended gem in a simple prong or bezel setting puts the sole focus on the gemstone, creating a pure and powerful symbol of classic sophistication that makes an essential daily wardrobe staple. 

Continuous Strands in Tennis Designs

The ultimate statement of luxury and glamour is delivered by our tennis necklace collection, featuring unbroken lines of matched stones. A continuous circle of precisely matched lab-grown diamonds provides sophisticated elegance that seamlessly transitions from daytime chic to formal eveningwear while offering remarkable structural value and breathtaking, continuous optical fire. 

Symbolic Heart and Cross Pendants

These symbolic architectural designs provide a beautiful way to wear your faith or deepest affections close to your heart. A sparkling heart necklace or a meticulously engineered cross necklace is a deeply personal, cherished gift that seamlessly merges profound spiritual or emotional meaning with exceptional fine jewelry craftsmanship. 

The Modern Lariat Y-Shape Silhouette

Chic, sophisticated, and entirely fashion-forward, our lariat necklace collection features a vertical drop that elongates the neck. This distinctive Y-shaped silhouette creates an elegant, plunging focal point that acts as the absolute perfect modern accessory for layering or wearing seamlessly with deep V-neck tops and formal evening gowns.

The Minimalist Solitaire Sub-Category
The definition of timeless elegance is found within our dedicated solitaire necklace collection, featuring a single brilliant stone. A suspended gem in a simple prong or bezel setting puts the sole focus on the gemstone, creating a pure and powerful symbol of classic sophistication that makes an essential daily wardrobe staple.
Continuous Strands in Tennis Designs
The ultimate statement of luxury and glamour is delivered by our tennis necklace collection, featuring unbroken lines of matched stones. A continuous circle of precisely matched lab-grown diamonds provides sophisticated elegance that seamlessly transitions from daytime chic to formal eveningwear while offering remarkable structural value and breathtaking, continuous optical fire.
Symbolic Heart and Cross Pendants
These symbolic architectural designs provide a beautiful way to wear your faith or deepest affections close to your heart. A sparkling heart necklaceor a meticulously engineered cross necklace is a deeply personal, cherished gift that seamlessly merges profound spiritual or emotional meaning with exceptional fine jewelry craftsmanship.
The Modern Lariat Y-Shape Silhouette
Chic, sophisticated, and entirely fashion-forward, our lariat necklace collection features a vertical drop that elongates the neck. This distinctive Y-shaped silhouette creates an elegant, plunging focal point that acts as the absolute perfect modern accessory for layering or wearing seamlessly with deep V-neck tops and formal evening gowns.

Direct-to-Consumer Manufacturing Standards

We firmly believe every piece of fine jewelry must be expertly crafted with immense care and absolute structural integrity. When you choose our direct-to-consumer brand, you securely receive a magnificent product of the highest metallurgical quality. Every brilliant design is fully backed by our enduring commitment to your satisfaction and stringent, uncompromising ethical standards.

Multi-Generational Metallurgical Expertise

Purchasing a magnificent piece from us means you directly benefit from over thirty years of professional jewelry manufacturing experience. Operating strictly from our New Jersey headquarters, our dedicated artisans meticulously design and handcraft every single setting. This unwavering dedication consistently ensures your brilliant gemstone remains flawlessly secure and structurally perfect for decades. 

A close-up of hands using a bright blue microfiber cloth to gently hold and polish a yellow gold floral motif lab-grown diamond pendant necklace.

Ethical Sourcing and Environmental Sourcing

Our deep commitment to sustainable practices means your beautiful diamond purchase is something you can feel truly wonderful about. Our rigorous lab-grown sourcing methods ensure a minimal environmental impact throughout the entire supply chain. You easily enjoy complete peace of mind while fully experiencing the extraordinary beauty and radiant sparkle of your meticulously crafted piece. 

A close-up of hands using a black microfiber cloth to carefully hold and inspect a yellow gold necklace featuring an interlocking heart pendant with lab-grown diamond pavé.

Fast, Free Shipping and Easy Returns

To guarantee a completely stress-free online shopping experience, we gladly offer fast, free shipping on all domestic jewelry orders. If your brilliant pendant is not the absolutely perfect fit, our remarkably easy, hassle-free return policy has you completely covered. We purposefully make your premium jewelry purchasing process completely risk-free, thoroughly enjoyable, and wonderfully memorable. 

A yellow gold necklace featuring a round-cut and pear-cut lab-grown diamond drop pendant elegantly resting on a soft, textured pink fabric background.

Lifetime Hardware Warranty and Defect Coverage

We proudly stand behind our structural fine jewelry with a highly comprehensive, industry-leading lifetime warranty covering manufacturing defects. You can be highly confident that your spectacular necklaces are securely backed by our unwavering commitment to quality. We purposefully make your premium jewelry purchasing process completely risk-free, thoroughly enjoyable, and effortlessly incredibly memorable everyday. 

 

A person's hands holding a yellow gold pear-cut lab-grown diamond pendant necklace over a brown textured towel, gently cleaning it with a white toothbrush, with a small glass bowl of water resting in the background.

FAQs About Lab Grown Diamond Necklaces

What makes lab-grown diamonds different from natural diamonds?

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Lab-grown diamonds are created using advanced technology, mirroring natural diamond conditions without mining. They’re chemically, physically, and visually identical to mined diamonds—just more sustainable. La Joya Jewelry’s lab-created diamonds are conflict-free, eco-friendly, and offer the same sparkle and quality at a significantly more affordable price

How do I choose the right jewelry piece for me?

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Think about your style, budget, and lifestyle. La Joya Jewelry makes it easy with detailed guides, from diamond shapes to necklace lengths. Whether you want a timeless solitaire or bold statement piece, our lab diamond necklaces combine beauty, affordability, and ethical luxury for the perfect fit.

What metals do you offer for your Diamond Necklaces?

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La Joya Jewelry offers diamond necklaces in 10K and 14K gold, including white, yellow, and rose gold options. Each metal complements lab-created diamonds beautifully and suits different skin tones and personal styles. You’ll find the perfect metal to enhance your necklace’s brilliance and elevate your everyday look.

Can I customize my jewelry piece?

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Absolutely! La Joya Jewelry offers customization options on many of our lab diamond necklaces. Choose your metal, setting, and stone size to create a unique piece tailored to your taste. It’s an ideal way to personalize your ethical diamond jewelry while staying within your affordable luxury budget.

How do I determine my Diamond Necklace metal?

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Start by considering your skin tone and jewelry wardrobe. White gold is sleek and modern, yellow gold is classic, and rose gold adds romantic warmth. All options at La Joya Jewelry are crafted to enhance lab-created diamonds—so you can’t go wrong no matter which you choose.

What is the best way to care for my Necklace?

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To care for your lab diamond necklace, clean it regularly, store it safely, and avoid chemicals or rough handling. La Joya Jewelry recommends gentle daily wipes and occasional deep cleaning for optimal sparkle. Our expert guides also offer step-by-step care tips to keep your jewelry looking brand new.

Do you offer a warranty on your Necklaces?

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Yes! Every La Joya Jewelry necklace comes with a free lifetime warranty covering manufacturing defects. We also offer the industry’s only Loss Guarantee Plan, giving you unmatched peace of mind. When you shop with us, you’re not just buying jewelry—you’re investing in quality and protection.

What is your return and exchange policy?

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La Joya Jewelry offers free 30-day returns and exchanges on all lab diamond necklaces. If you’re not completely in love with your piece, we’ll make it right. Our easy, no-hassle process ensures your satisfaction, whether you’re returning or exchanging for the perfect fit or style.

Is your jewelry ethically sourced?

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Yes. Our lab-created diamonds are ethically grown in controlled environments, eliminating the need for mining. At La Joya Jewelry, every piece of jewelry is cruelty-free, conflict-free, and environmentally friendly—because we believe beauty should never come at the cost of ethics or the planet.

How long does shipping take?

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Most La Joya Jewelry orders ship within 1–2 business days, with free standard shipping across the U.S. Expedited options are also available at checkout. You’ll receive tracking details as soon as your lab diamond necklace ships—so you can sparkle sooner without the wait.

Last Modified Date: August 31, 2026