Buy 3 Ct Lab-Grown Diamond Engagement Ring
When you're ready to make a grand gesture of love, only the boldest brilliance will do. Our 3 Ct lab-grown diamond engagement ring , crafted in 100% solid 14K & 18K gold, are designed to impress—without compromising your values. With IGI-certified lab-grown diamonds, these rings offer exceptional sparkle, clarity, and size—at a price that's smart, not inflated.
Each piece is handmade, hypoallergenic, and shipped free across the USA, complete with full certification and luxury packaging. At The Karat Store, we believe your forever ring should be as breathtaking as your story.
14 K Solid Gold 3ct Pear Cut lab Grown Diamond Engagement Ring
14k Gold 2.2ct Lab Grown Diamond Engagement Ring
14k Gold 2.5Ct Lab Grown Diamond Engagement Ring
14k Gold 2.5Ct Round Shape Lab Grown Diamond Ring
14k Gold 2.5ct Solitaire Lab Grown Diamond Engagement Ring
14K Gold 2.6ct Emerald Cut Lab Grown Diamond Engagement Ring
14k Gold 2.6ct Round lab Grown Diamond Engagement Ring
14k Gold 3ct Lab Grown Diamond Engagement Ring
14k Gold Lab-Diamond Engagement Ring
14k Gold Three Stone Pear & Round Lab Grown Diamond Ring
14K Solid Gold U Shape Lab Grown Diamond Engagement Ring
14K Solid Gold 3ct Solitaire Lab Grown Diamond Ring
14K Solid Gold Halo Lab Grown Diamond Ring
14K Solid Gold 2.5 Ct Emerald Cut Halo Ring Lab Grown Diamond Engagement Ring
14K Solid Gold 2.5ct Emerald Cut Lab Grown Diamond Ring
14K Solid Gold 2.5ct Oval Shape Lab Grown Diamond Engagement Ring
14K Solid Gold 2.5ct Pear Cut lab Grown Diamond Engagement Ring
14K Solid Gold 2.5CT Round Shape Lab Grown Diamond Engagement Ring
14K Solid Gold 2.5ct Soitaire Lab Grown Diamond Engagement Ring
14K Solid Gold 2.5ct Solitaire Lab Diamond Engagment Ring
14K Solid Gold 2.5ct Solitaire Lab Grown Diamond Ring
14K Solid Gold 2.6ct Lab Grown Diamond Engagment Ring
14K Solid Gold 2.6ct Oval Shape Lab Grown Diamond Engagement Ring
14K Solid Gold 2.6ct Oval Shape Lab Grown Diamond Engagement Ring
14K Solid Gold 2.6ct Solitaire Lab Grown Diamond Engagement Ring
14K Solid Gold 2.6ct Solitaire Lab Grown Diamond Engagment Ring
14K Solid Gold 2.71ct Oval Shape Lab Grown Diamond Engagement Ring
14K Solid Gold 2.7ct Emerald Cut Lab Grown Diamond Engagement Ring
14K Solid Gold 2.7ct Solitaire Lab Grown Diamond Engagement Ring
14K Solid Gold 2.7ct Solitaire Lab Grown Diamond Engagement Ring
14K Solid Gold 2.7ct Solitaire Lab Grown Diamond Engagment Ring
14K Solid Gold 2.8ct Lab Grown Diamond Engagement Ring
14K Solid Gold 3 Ct Emerald Cut Halo Lab Grown Diamond Engagement Ring
The 14K Solid Gold Emerald Cut Halo Ring Lab Grown Diamond Engagement Ring by The Karat Store combines timeless elegance and sustainability. Available in 14K gold with options for rose, yellow, or white gold, featuring a 3.00 ct diamond with VVS-VS clarity and E-F colour. Perfect for the eco-conscious couple.
14K Solid Gold 3.5ct Pear Cut lab Grown Diamond Engagement Ring
14K Solid Gold 3ct Oval Shape Lab Grown Diamond Engagement Ring
14K Solid Gold 3ct Round Lab Grown Diamond Ring
14K Solid Gold 3ct Solitaire Lab Grown Diamond Ring
14K Solid Gold Halo Lab Grown Diamond Engagement Ring
14K Solid Gold Infinity Lab Grown Diamond Engagement Ring
14K Solid Gold Nature Inspired Lab Grown Diamond Ring
14k Solid Gold Oval Cut Lab-Grown Diamond Ring
14K Solid Gold Round Shape Lab Grown Diamond Engagement Ring
This 14K Solid Gold Lab-Grown Diamond Engagement Ring features a 2ct round-cut center stone (F color, VS2 clarity) with a Super Cut grade, ensuring exceptional brilliance. Accented by six round lab-grown diamonds (0.6ctw) and crafted in 14K gold (white, rose, or yellow), this IGI-certified ring is a timeless expression of love.
14K Solid Gold Solitaire Lab Grown Diamond 3ct Engagement Ring
14K Solid Gold Solitaire Lab Grown Diamond Engagement Ring
14K Solid Gold Solitaire Lab Grown Diamond Engagement Ring
14K Solid Gold Three Stone Lab Grown Diamond Engagement Ring
14K Solid Gold Three Stone Lab Grown Diamond Ring
14K Solid Gold Three Stone Pear & Round Lab Grown Diamond Engagement Ring
14K Solid Gold Three Stone Pear & Round Lab Grown Diamond Ring
14K Solid Gold Trapezoid Round Shape Lab Grown Diamond Engagement Ring
2.5ct Emerald Cut Engagement Ring with Marquise and Round Side Stones
3 CT Round Cut 14k Gold Lab-diamond Snowdrift Ring Engagement Ring
3ct Emerald Cut Engagement Ring with Marquise and Round Side Stones
4 Prong Emerald Cut Lab Grown Diamond 3ct Engagement Ring
5ct cushion engagement ring, gold engagement ring, lab diamond
The 5ct Cushion Engagement Ring is a classic solitaire design featuring a brilliant lab-grown diamond with a 5.00 ct weight, F-G color range, and VS clarity. Crafted in 14K Solid Gold, available in white, rose, or yellow gold. Certified with BIS Hallmarked & IGI for quality assurance. Shipping in 10-12 business days, with live chat and video call support available.
Asscher Cut Lab Grown Diamond 3ct multi Diamond Engagement Ring
Elongated Radiant Cut Lab Grown Diamond 3ct Engagement Ring
Elongated Emerald Cut 3ct Lab Grown Diamond Engagement Ring
Emerald Cut Lab Grown Diamond 3ct Engagement Ring
Halo Ring 3ct Lab Grown Diamond Engagement Ring
Lab Grown Diamond 3ct Halo Ring in 14 K Solid Gold Engagement Ring
Marquise Cut 3.5 ct 14K Solid Gold Lab Grown Diamond Engagement Ring
Marquise Cut 3ct 14K Solid Gold Lab Grown Diamond Engagement Ring
Oval Cut 3ct Lab Grown Diamond Engagement Ring
Oval Solitaire Ring 3 ct. Lab Grown Diamond Engagement Ring
Pear Cut Halo Ring 3ct Lab Grown Diamond Engagement Ring
Princess Cut Halo Solitaire Ring 3 ct Lab Grown Diamond Engagement Ring
The Princess Cut Halo Solitaire Ring 3 ct Lab Grown Diamond Engagement Ring by The Karat Store offers timeless elegance and sustainability. Available in 14K gold with options for rose, yellow, or white gold, and featuring VVS-VS clarity and E-F colour diamonds, this ring is perfect for the eco-conscious couple.
Round Cut 3 ct Lab Grown Diamond Engagement Ring
Round Cut 3 ct Lab Grown Diamond Prong Setting Engagement Ring
The Round Cut 3 ct Lab Grown Diamond Prong Setting Engagement Ring by The Karat Store offers classic elegance and sustainability. Available in 14K gold with options for rose, yellow, or white gold, and featuring VVS-VS clarity and E-F colour diamonds, this ring is perfect for the eco-conscious couple.
Three Stone Anniversary Solitaire Ring 3 ct. Lab Grown Diamond
Three Stone Anniversary Solitaire Ring 3 ct. Lab Grown Diamond
The Three Stone Anniversary Solitaire Ring 3 ct. Lab Grown Diamond by The Karat Store combines timeless elegance and sustainability. Available in 14K gold with options for rose, yellow, or white gold, featuring a 3.00 ct lab-grown diamond with VVS-VS clarity and E-F colour. Perfect for celebrating your enduring love.
Tri Stone Anniversary Solitaire Ring 3 ct. Lab Grown Diamond
Twisted Band 3ct Lab Grown Round Brilliant Diamond Engagement Halo Ring
History, Types, Cultural Significance Of Lab-Grown Diamond Engagement Ring
A 3 ct engagement ring makes an undeniable statement—bold, elegant, and unforgettable. It’s the ring for those who believe in celebrating love in the biggest way, with a diamond that truly stands out. And thanks to lab-grown technology, you can enjoy this extraordinary size without sacrificing quality or ethics.
Our collection features:
Solitaires that let the diamond shine
Halo and double-halo rings that add extra sparkle
Three-stone styles with meaningful symbolism
Split-shank and hidden halo settings
Available in round, oval, emerald, cushion, princess, and pear cuts
US shoppers love lab-grown diamonds because they offer real luxury, responsible sourcing, and unmatched value. A 3 ct lab-grown ring isn’t just about size—it’s about love, intention, and a commitment to beauty with integrity.
Quality of Material Used
Every engagement ring is made using solid 14K & 18K gold—not plated or gold-filled. Choose from yellow, white, or rose gold for a finish that suits your style and skin tone.
Our lab-grown diamonds are ethically created, expertly selected, and hand-set by skilled artisans. All rings are hypoallergenic, safe for sensitive skin, and built for everyday elegance.
Certifications Provided
Each 3 carat lab-grown diamond ring includes:
An IGI certificate verifying carat, cut, clarity, and origin
A 14K & 18KÂ gold purity stamp
A detailed invoice and authenticity documentation
This is fine jewelry you can trust—backed by certification, transparency, and craftsmanship.
Craftsmanship
From the first sketch to the final polish, each ring is handcrafted by master jewelers with precision and care. Every diamond is carefully set, every finish is polished to perfection, and every ring is individually inspected before it ships.
Because when you're proposing forever, the ring should reflect nothing less.
Frequently Asked Questions
1. How long does shipping take to the USA?
Shipping takes 12 to 22 days to your doorstep in the USA.
2. Are your diamonds and gold real?
Yes. All rings are made with IGI-certified lab-grown diamonds and 100% solid 14K & 18K gold.
3. How do lab-grown diamonds compare to mined ones?
They’re identical in every way—same look, strength, and brilliance—just more sustainable and affordable.
4. Will my ring come with certification?
Yes. Every ring includes an IGI certificate, a 14K & 18K gold stamp, and full documentation.
5. What is your return policy?
Returns are accepted only for damaged items or if the wrong ring is delivered.
6. Is shipping free in the USA?
Yes, we offer free shipping across all 50 states.
7. Will I receive tracking information?
Absolutely. A tracking number will be emailed once your ring ships.
8. Can I customize my 3 ct ring?
Yes! We accept custom orders—email us with your design or preferred specifications.
9. Are the rings safe for sensitive skin?
Yes, all rings are nickel-free and hypoallergenic, perfect for daily wear.
10. How do I contact The Karat Store?
Reach out to us at contact@thekaratstore.us for questions, custom requests, or order support.