18K Solid Gold 1.70 Carat Diamond and Black Onyx Engagement Ring
$1,939.00
Bold 18k solid gold engagement ring featuring 1.70 carats of diamonds and black onyx—crafted for modern elegance and striking sophistication.
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 |
Bold, elegant, and utterly unforgettable — the 18k Solid Gold 1.70 Carat Diamond and Black Onyx Engagement Ring is a captivating take on a classic symbol of commitment. At the heart of this unique design lies a dramatic black onyx centerpiece, custom-cut and polished to perfection. Its deep, opaque beauty is contrasted by a glittering halo of natural diamonds that encircle the center stone and extend partially along the band, creating a rich interplay of light and shadow.
The total diamond weight of approximately 1.70 carats offers an impressive sparkle, with each stone meticulously set to enhance the ring’s symmetry and brilliance. The black onyx symbolizes strength, protection, and grounding — a powerful alternative to traditional engagement stones, ideal for the modern bride who values individuality and symbolism.
Crafted in solid 18k gold, available in yellow, white, or rose, the ring features a smooth, high-polish finish and a balanced setting designed for both security and elegance. Whether you’re looking for a bold engagement ring or a meaningful statement piece, this ring blends vintage glamour with contemporary edge.
Each piece is handcrafted to order, ensuring exceptional quality and attention to detail. The ring comes certified for gold purity and diamond authenticity and arrives in a luxury jewelry box, ready to mark a milestone with style and depth. Sophisticated and striking, this onyx and diamond ring speaks to a love that’s anything but ordinary — powerful, enduring, and unapologetically unique.
Product Details :
- Metal: 18k Solid Gold (Available in White, Rose, and Yellow Gold)
- Gross Weight: 3.40 grams
- Diamond Weight: 0.45 carats
- Onyx Weight: 1.25 carats
- Gold Content: 3.06 grams
- Certifications: BIS Hallmarked & GIA
- 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.
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