18k Solid Gold Moissanite Diamond Rectangle Octagon Heart Necklace
£1,177.00
A modern geometric-meets-romantic necklace in solid 18K gold, featuring a sparkling 0.15 CTW Premium Moissanite centre stone and an elegant multi-shape motif.
Necklace Size Guide
| Length (inches) | Length (cm) |
| 16 | 41 |
| 18 | 46 |
| 22 | 51 |
| 22 | 56 |
| 24 | 61 |
| 26 | 66 |
| 28 | 71 |
| 30 | 76 |
Sleek, contemporary and full of meaning, this 18K solid gold necklace pairs a rectangle, octagon and heart motif for a look that’s equal parts geometric elegance and romantic charm. It’s designed to sit beautifully whether worn alone as a statement or layered with your everyday favourites.
At its centre, 0.15 CTW Premium Moissanite in bright DE colour and VVS clarity delivers crisp brilliance and fire, finished to a polished, high-end feel. The stone is GRA certified for added reassurance.
Crafted in your choice of yellow, white or rose gold and presented in The Karat Store’s signature jewellery box, it’s a thoughtful gift for birthdays, anniversaries and milestone moments.
Key Highlights
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Geometric Heart Motif: Rectangle, octagon and heart shapes for a modern, meaningful finish.
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Premium Moissanite Brilliance: 0.15 CTW Premium Moissanite with DE colour and VVS clarity for striking sparkle.
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Solid 18K Gold: Crafted in 18K solid gold, available in yellow, white or rose gold.
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Adjustable Fit: Adjustable chain for comfortable wear, easy layering and versatile styling.
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Certified Confidence: GRA certification for your Premium Moissanite stone.
Product Details Summary
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Metal: 18k Solid Gold
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Gold Colour Options: White Gold, Rose Gold, Yellow Gold
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Necklace Style: Geometric motif necklace
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Motif Shapes: Rectangle, octagon, heart
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Stone Type: Premium Moissanite
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Total Stone Weight: 0.15 CTW
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Stone Colour: DE
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Stone Clarity: VVS
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Certification: GRA
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Chain: Adjustable
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Colour Upgradation: Available ($200 per colour grade upgrade)
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Packaging: Karat Store Jewellery box
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Shipping Time: 15–25 Business Days
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Customer Support: Live chat & video call assistance
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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