18k Gold Lab Grown Diamond Marquise Ring
£1,405.00
Sophisticated 18k gold marquise lab-grown diamond ring, featuring a 4.55ct HPHT-created diamond. Available in white, rose, and yellow gold. IGI & BIS Hallmarked for authenticity.
Ring Size Guide
| US Size | Length (mm) | US Size | Length (mm) | US Size | Length (mm) |
| 3 | 44.1 | 6.25 | 52.6 | 9.50 | 60.9 |
| 3.25 | 44.7 | 6.5 | 53.2 | 9.75 | 61.6 |
| 3.5 | 45.4 | 6.75 | 53.8 | 10 | 62.3 |
| 3.75 | 46 | 7 | 54.5 | 10.25 | 63 |
| 4 | 46.7 | 7.25 | 55 | 10.5 | 63.6 |
| 4.25 | 47.3 | 7.5 | 55.7 | 10.75 | 64.3 |
| 4.5 | 48 | 7.75 | 56.4 | 11 | 65 |
| 4.75 | 48.6 | 8 | 57.1 | 11.25 | 65.6 |
| 5 | 49.32 | 8.25 | 57.8 | 11.5 | 66.2 |
| 5.25 | 49.95 | 8.5 | 58.4 | 11.75 | 66.8 |
| 5.5 | 50.6 | 8.75 | 59 | 12 | 67.5 |
| 5.75 | 51.2 | 9 | 59.6 | 12.5 | 68.8 |
| 6 | 51.9 | 9.25 | 603 | 13 | 70.1 |
Elegant and timeless, this 18k gold lab-grown diamond marquise ring is designed to captivate with its brilliance and sophistication. Featuring a stunning 4.55-carat marquise-cut lab-grown diamond, this ring offers a regal and elongated silhouette that enhances its fire and sparkle. The HPHT (High-Pressure High-Temperature) diamond creation process ensures exceptional quality, mimicking the beauty of natural diamonds while maintaining ethical and sustainable sourcing.
Crafted in 18k solid gold, this exquisite piece is available in white, rose, and yellow gold, allowing you to customize it to your preference. Weighing 3.67 grams, the ring is lightweight yet durable, providing a comfortable fit for daily wear or special occasions. IGI & BIS Hallmarked, this ring guarantees superior craftsmanship and authenticity, making it a valuable addition to any jewelry collection.
Whether worn as an engagement ring, a statement piece, or a symbol of timeless elegance, this marquise lab-grown diamond ring is the epitome of luxury and refinement.
Product Details:
- Main Stone: Lab-Grown Diamond
- Diamond Shape: Marquise
- Total Diamond Carat Weight: 4.55ct
- Diamond Creation Process: HPHT
- Metal: 18k Solid Gold (Available in White, Rose, and Yellow Gold)
- Gold Weight: 3.67 grams
- Certifications: IGI & BIS Hallmarked
- Shipping: Secure and insured worldwide shipping
- Customer Support: Available via email and WhatsApp
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 & UPSÂ
Please inspect your package upon delivery for any damage or tampering before signing.
For assistance, contact us at contact@thekaratstore.uk.
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:Â Certified by the International Gemological Institute (IGI)Â for authenticity and quality.
Gemstone Jewelry:Â 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:Â Certified by the Gemological Research Association (GRA)Â 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.
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