Round Cut 3 ct Lab Grown Diamond Prong Setting Engagement Ring
$2,149.00
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 color diamonds, this ring is perfect for the eco-conscious couple.
Ring Size Guide
How to Measure the Inside Diameter
If you have a ring that already fits you well:
- Place the ring flat on a ruler.
- Measure the distance straight across the inside of the ring (from one inner edge to the opposite inner edge).
- This measurement (in millimeters) is the inside diameter of your ring.
- Match this number with the chart to find your ring size.
Need Help?
If you’re unsure about your size, our experts at The Karat Store are here to guide you.
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🌐 Mail us at: contact@thekaratstore.us
| US Size | Inside Diameter (mm) | Inside Circumference (mm) |
| 3 | 14.1 | 44.3 |
| 3.5 | 14.5 | 45.6 |
| 4 | 14.9 | 46.8 |
| 4.5 | 15.3 | 48.1 |
| 5 | 15.7 | 49.3 |
| 5.5 | 16.1 | 50.6 |
| 6 | 16.5 | 51.9 |
| 6.5 | 16.9 | 53.1 |
| 7 | 17.3 | 54.4 |
| 7.5 | 17.7 | 55.6 |
| 8 | 18.1 | 56.9 |
| 8.5 | 18.5 | 58.1 |
| 9 | 19 | 59.7 |
| 9.5 | 19.4 | 61 |
| 10 | 19.8 | 62.2 |
| 10.5 | 20.2 | 63.5 |
| 11 | 20.6 | 64.7 |
| 11.5 | 21 | 66 |
| 12 | 21.4 | 67.2 |
| 12.5 | 21.8 | 68.5 |
| 13 | 22.3 | 70.1 |
| 14 | 23.2 | 72.9 |
Embrace classic elegance with the Round Cut 3 ct Lab Grown Diamond Prong Setting Engagement Ring from The Karat Store. This exquisite ring features a brilliant 3.00 ct round-cut lab-grown diamond, expertly set in a timeless prong setting. Available in 14K solid gold, with an option for 18K upon request, you can personalize your ring with rose gold, yellow gold, or white gold to suit your style preferences.
The band, with its delicate 1.50 mm width and thickness, offers a refined and sophisticated backdrop to showcase the dazzling center stone. Our lab-grown diamonds boast VVS-VS clarity and E-F color, ensuring exceptional brilliance and quality that rivals natural diamonds. The round cut, renowned for its timeless appeal and maximum sparkle, is the perfect choice for those who appreciate classic beauty with a modern twist.
Opting for a lab-grown diamond reflects a commitment to sustainability and ethical sourcing. These diamonds are created using advanced technology, ensuring they are free from the environmental and social impacts associated with traditional diamond mining. The Karat Store is dedicated to providing sustainable luxury, offering jewelry that is ethically sourced and exquisitely crafted.
Celebrate your love with a ring that symbolizes both your commitment to each other and to a better world. The Round Cut 3 ct Lab Grown Diamond Prong Setting Engagement Ring from The Karat Store is the perfect choice for those who value elegance, quality, and sustainability.
Product Details:-
- Metal: 14K Solid Gold (Available in White ,Rose Gold and Yellow Gold)
- Width of Band: 1.50 mm
- Thickness of Band: 1.50 mm
- Color & Clarity: Lab Grown Diamond VVS-VS , E-F Color
- Available center stone carats: 3.00 ct
- Certifications: IGI & BIS Hallmarked
- Shipping Time: 15-25 Business Days
- Customer Support: Available via live chats, and video calls.
We offer free shipping across the USA on all orders—no minimum required.
Processing & Handling: 5–10 business days
Shipping Time: 10–15 business days
Total Delivery Time: 15–25 business days from the date of order
Carriers: USPS & UPS
Please inspect your package upon delivery for any damage or tampering before signing.
For assistance, contact us at contact@thekaratstore.us.
Thank you for shopping with The Karat Store US!
We take pride in offering high-quality jewelry and providing the necessary certifications to ensure your peace of mind. Below is a breakdown of the certification process for each product type:
Lab-Grown Solitaire Jewelry: Certified by the International Gemological Institute (IGI) for authenticity and quality.
Gemstone Jewelry: Accompanied by a detailed Gemologist Report.
- Certified by YGA (Your Gemologist Associatio.
- Optional Certification: For IGI or GIA certification, available upon request. Please note that this comes with a 30-40 day waiting period and an additional charge.
Moissanite Jewelry: Certified by the Gemological Research Association (GRA) with a comprehensive report.
For more details, Check out our certification information page.
To keep your jewelry from The Karat Store looking its best, follow these simple care tips:
- Clean Regularly: Use a mild soap and water solution, gently scrub with a soft brush, rinse, and dry with a soft cloth.
- Store Safely: Keep your jewelry in a dry place, in a jewelry box or soft pouch, and separate pieces to avoid scratches.
- Avoid Chemicals: Remove jewelry before swimming or using cleaning products to prevent exposure to harsh chemicals.
- Handle with Care: Avoid wearing jewelry during activities that may cause damage, such as exercising or heavy lifting.
- Inspect Periodically: Check for loose stones or worn settings. Contact us for repairs if needed.
By following these tips, you can ensure your 14k gold jewelry remains beautiful for years to come. For any questions, contact us at thekaratstore@gmail.com.
5 reviews for Round Cut 3 ct Lab Grown Diamond Prong Setting Engagement Ring
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Patricia Keener –
I receive compliments on my engagement ring all the time. It’s elegant, timeless, and the diamond is just breathtaking.
Virginia Birmingham –
I bought this ring for my engagement and it exceeded my expectations. The diamond is gorgeous and the setting is very secure.
Herbert Tomblin –
This ring is a great value for the price. The 3 ct diamond looks incredible and the prong setting showcases it beautifully.
Bridget Parent –
The quality of this ring is excellent. The lab grown diamond is indistinguishable from a natural one and the craftsmanship is top-notch.
Emily Settles –
The Round Cut 3 ct Lab Grown Diamond Prong Setting Engagement Ring is absolutely stunning. The diamond sparkles beautifully and the prong setting is perfect.