18K Solid Gold Marquise Diamond Chain Necklace | Riyanika Jewels
18K Solid Gold Marquise Diamond Chain Necklace - Side View | Riyanika Jewels
18K Solid Gold Marquise Diamond Chain Necklace - Detail | Riyanika Jewels
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18K · Natural

18K 0.55ct Marquise Shaped Natural Diamond Chain Necklace

SKU: RJ107-18N

$23,537
0.55ct | E/VS1 | 18K solid gold | GIA certified.
Total carat weight
0.55 ct
Shape
Marquise
Diamond type
Natural
Color / clarity
E / VS1
Certification
GIA
Color 18K Rose Gold
Necklace Length 16"

Size Guide

Your selection

Color
18K Rose Gold
Necklace Length
16"
Total$23,537
  • GIA Certified
  • Free Shipping
  • 30-Day Returns
  • Free Engraving
  • 24/7 Support
  • Lifetime Warranty

FedExUPS Secure Insured worldwide shipping. Estimated delivery Nov 14 – Nov 24.

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18K Natural Diamond Jewelry·Birthday Gifts·Christmas Gifts·Gifts·Mothers Day·Natural Diamond Jewelry·Natural Diamond Necklaces·Necklaces

A delicate fusion of elegance and sophistication, this 18K Solid Gold Marquise Diamond Chain Necklace showcases timeless style in its most refined form. Adorned with 0.55 carats of natural marquise-cut diamonds, each stone is hand-selected for its brilliance, balance, and beauty. The marquise cut, known for its elongated shape and pointed ends, adds a graceful sparkle that flatters any neckline.

Crafted in luxurious 18K solid gold, the necklace features E color and VS1 clarity diamonds, offering exceptional purity and fire. The streamlined design makes it ideal for everyday luxury or understated glamour on special occasions.

With GIA certification, this necklace guarantees quality, authenticity, and heirloom-worthy craftsmanship.

Product Details:

  • Metal: 18K Solid Gold
  • Total diamond weight: 0.55ct
  • Gemstone type: Diamond
  • Gemstone sourcing: Natural
  • Shape & cutting style: Marquise
  • Colour: E
  • Clarity: VS1
  • Certifications: GIA
  • Shipping Time: 15-22 days

Frequently Asked Questions

What gold options are available?
Our necklaces are available in 14K and 18K solid gold in yellow, white, or rose gold. 18K is our signature; 14K offers the same designs at a more accessible price.
Are these necklaces made with solid gold?
Yes. All Riyanika necklaces are made with solid 14K or 18K gold — never plated, filled, or vermeil.
Can I choose natural or lab-grown diamonds?
Yes. Both options are available. Natural diamonds are GIA certified; lab-grown diamonds are IGI certified. Both are chemically and optically identical — the difference is origin and price.
Will my necklace come with a diamond certificate?
Yes. Natural diamonds are certified by GIA; lab-grown diamonds are certified by IGI. Certificates are included with your order.
Can I choose the chain length?
Yes. Our necklaces are available in multiple lengths — typically 16", 18", 20", and 22". Select your preferred length when placing your order.
Can the diamond size or shape be customized?
Yes. We can adjust the carat weight and diamond shape to suit your preference. Share your requirements with us on WhatsApp before placing your order.
Can I see a design preview before production begins?
Yes. For customized or bespoke pieces we provide a CAD preview before production starts, so you can approve the design first.
How long does delivery take?
We offer worldwide free shipping. Orders are usually dispatched within 15–22 business days. Shipping time varies by location but generally ranges from 5–7 business days.

Need Help?

Have a question about customization, chain length, or diamonds? Chat with our jewelry specialists on WhatsApp for personalized assistance.

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Loved By Customers

Loved by repeat buyers across the world

That's why we keep coming back.
Josh, Singapore Repeat buyer
I LOVE them — so happy! I can't believe I forgot to message you.
Kate N., Singapore Repeat buyer
Love it, Pri — thank you. Looks gorgeous.
Keshwin, Singapore Diamond eternity band