18K Solid Gold Pentagon Parti Sapphire Ring
£2,696.00
Unique 18k solid gold ring featuring a rare pentagon-cut parti sapphire—crafted for bold elegance, vibrant color, and modern sophistication.
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 |
Bold geometry meets raw beauty in our 18k Solid Gold Pentagon Parti Sapphire Ring — a one-of-a-kind design crafted for those who appreciate the unexpected. At the heart of this ring lies a mesmerizing pentagon-cut parti sapphire, known for its natural bi-color or tri-color patterning, often blending greens, blues, and yellows in stunning harmony. No two parti sapphires are alike, making each ring as unique as its wearer. The geometric cut adds an architectural edge, giving the classic solitaire ring a modern, edgy twist.
Crafted in 18k solid gold, the setting is thoughtfully designed to cradle the sapphire while allowing maximum light to pass through the stone, enhancing its brilliance and color shifts. Whether worn as an alternative engagement ring or as a statement piece for special occasions, this ring stands out for its individuality and artisanal charm. The band is smooth and polished, offering comfort for everyday wear, while the bold stone takes center stage.
Each ring is handmade and carefully set by expert artisans, ensuring quality and durability. The sapphire used is ethically sourced and certified, and the gold is BIS hallmarked for purity. Whether gifted for a celebration or chosen as a personal treasure, this ring carries an energy of uniqueness, confidence, and sophistication.
From its angular silhouette to its multicolored gemstone, this piece speaks to the beauty of nonconformity. A true collector’s item, it’s meant for the one who dares to be different — and wants their jewelry to reflect that.
Product Details:
- Central Stone: Natural Pentagon-Shaped Parti Sapphire (approx. 1.2-1.3 ct)
- Side Stones: White Moissanites (5 x 3 mm)
- Metal: 18k Solid Gold (Available in White, Rose, or Yellow Gold)
- Certifications: GRA & 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.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: 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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