18K Solid Gold 1.5ct Round Brilliant Natural Diamond Cathedral Solitaire Engagement Ring
18K Solid Gold 1.5ct Round Brilliant Natural Diamond Cathedral Solitaire Engagement Ring - Side View
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18K · Natural

18K 1.5ct Round Cut Natural Diamond Solitaire Engagement Ring

$101,992
Round brilliant | 18K solid gold | GIA certified.
Total carat weight
1.5 ct
Shape
Round
Diamond type
Natural
Certification
GIA
Setting
Solitaire
Color 18K Yellow Gold
Ring Size 7

Size Guide

Your selection

Color
18K Yellow Gold
Ring Size
7
Total$101,992
  • 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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Celebrate your forever moment with this 18K Solid Gold Cathedral Solitaire Engagement Ring, showcasing a breathtaking 1.5 carat natural round brilliant diamond. Expertly cut for maximum fire and brilliance, the center diamond radiates with G color and VS2 clarity, offering an exceptional sparkle that captivates from every angle.

The classic cathedral setting gently arches the band toward the diamond, elevating it both literally and symbolically—highlighting the stone while allowing light to pass through for enhanced brilliance. Set in prongs for security and elegance, this minimalist design speaks volumes through timeless craftsmanship.

Crafted in solid 18K gold and certified by GIA, this solitaire ring offers purity, authenticity, and heirloom-level quality—perfect for proposals, anniversaries, or milestone celebrations.

Product Features:

  • Metal: 18K Solid Gold

  • Center Diamond Weight: 1.50 Carats (Approx.)

  • Diamond Shape: Round Brilliant

  • Color & Clarity: G / VS2

  • Diamond Dimensions: 7.39 x 7.43 x 4.61 mm (Approx.)

  • Ring Band: 1.8 mm thickness / 1.8 mm width

  • Setting Style: Prong with Cathedral Mount

  • Certifications: GIA Certified

  • Shipping Time: 15–22 business days

Frequently Asked Questions

Can this ring be made in my size?
Yes. We make every ring to order in your preferred size, including sizes not listed on our website. Use our size guide or message us on WhatsApp if you're unsure.
What gold options are available?
Our rings are available in 14K and 18K solid gold in yellow, white, or rose gold. 18K is our signature tier; 14K offers the same designs at a more accessible price.
Is this ring made with solid gold?
Yes. All Riyanika rings are made with solid 14K or 18K gold. We do not use gold-plated, gold-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.
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.
Is engraving available?
Yes. We offer complimentary engraving on most rings. Provide your preferred text or initials when placing your order.
Will my ring come with a diamond certificate?
Yes. Natural diamonds are certified by the Gemological Institute of America (GIA); lab-grown diamonds are certified by the International Gemological Institute (IGI). Both certificates are included with your order.
Can I see a design preview before production begins?
Yes. For customized or bespoke pieces we provide a CAD (computer-aided design) 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, sizing, 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