14K Lab-Grown Diamond Adjustable 16-18" Necklace with 1 CTW and 1/2 CTW Options
Discover the elegance of finely crafted 14K gold necklaces featuring lab-grown diamonds that blend timeless beauty with ethical sophistication. Each necklace is meticulously designed with a polished finish and an adjustable length ranging from 16 to 18 inches, ensuring a perfect fit for any neckline.
These exquisite pieces showcase round or emerald-shaped lab-grown diamonds, known for their remarkable clarity (Si1-Si2 to Si) and color grade (G-H), offering brilliant sparkle and exceptional quality. The diamonds are securely set in a bezel prong style, enhancing durability while allowing maximum light reflection. Pendant dimensions vary to complement the carat total weight (CTW), which ranges from 1/2 CTW to 1 CTW, with sizes approximately 4.9 mm to 6.5 mm for round cuts and 5.2 x 3.8 mm for emerald cuts.
Crafted from solid 14K gold, each necklace features a classic cable chain style that balances strength and elegance. The surface finish is polished to a high shine, with select options rhodium-plated to enhance durability and luster. These necklaces are sold individually and embody standard weight specifications, ensuring comfortable wear without compromising on presence.
Perfect for those seeking a sustainable and stylish accessory, these lab-grown diamond necklaces offer versatility with their adjustable length and refined design. Whether worn alone or layered, they provide a sophisticated sparkle suitable for everyday wear or special occasions.
Embrace the brilliance of lab-grown diamonds combined with expert craftsmanship in these stunning 14K gold necklaces, designed to elevate any jewelry collection with ethical luxury and timeless charm.
Frequently Asked Questions
Quality Concerns? We've Got You Covered!
-
At Motek Jewelry, we live by our motto: Quality First. All our pieces are crafted with high-grade materials like 10k gold, 14k gold jewelry, 18k gold, sterling silver, genuine lab grown & natural gemstones, natural & lab grown diamond jewelry, with durable plating when appliccable. We meticulously inspect each piece before it reaches you to ensure it meets our exacting standards.
Still have questions? Explore our warranty page for peace of mind.
-
Express yourself with jewelry that truly reflects your individuality. Our collections feature hand-carved details, asymmetrical designs, rare gemstones and other great features. With thousands of styles to choose from, you are sure to find the perfect piece of jewelry to match your style.
Want to discover pieces that perfectly match your vibe? Browse our collections by category (in main menu) or ask our intelligent chatbot for help.
-
We believe in ethical and sustainable practices. Our jewelry is sourced responsibly, with a focus on fair trade practices, recycled materials, ethical labor with an emphasis on avoiding child labor and slavery, and direct partnerships with artisans. We proudly manufacture the vast majority of our jewelry products in the United States. Made in USA Jewelry for the win!
-
make use of our super smart AI customer service bot who can give you personalized and curated advice and suggestions.
We strive to make your shopping experience as seamless as possible. Enjoy free shipping on orders over $50, discreet packaging, easy exchanges, & secure online checkout.
Ready to shop? Explore our collection and find your perfect piece today!


Our Story, Our Promise
Ours is a story of multi-generational dedication, of committing to stand behind our motto - "Quality First" no matter what.