Three Stone Engagement Rings
Celebrate your love story with three stone engagement rings featuring a trio of lab-grown diamonds that symbolize the past, present, and future. Crafted in 14K or 18K gold, these rings make a stunning engagement ring for her, proposal ring, or promise ring. Perfect for weddings, engagements, anniversaries, and special milestones, they combine elegance, meaning, and timeless beauty.
Tapered Baguette Sidestone Pear Three Stone Engagement Ring
Tapered Baguette Sidestone Emerald Three Stone Engagement Ring
Pear Sidestone Pear Three Stone Engagement Ring
Tapered Baguette Sidestone Round Three Stone Engagement Ring
Tapered Baguette Sidestone Oval Three Stone Engagement Ring
Pear Sidestone Oval Three Stone Engagement Ring
4 Key Assurances for Engagement Ring
Luminary Gem — Frequently Asked Questions
Yes. All Luminary Gem engagement rings are crafted using certified lab-grown diamonds, each accompanied by an IGI certificate for quality and authenticity.
Yes! Every engagement ring comes with two certificates:
- An IGI diamond certificate, clearly detailing the diamond’s grade, cut, color, clarity, and carat weight.
- An IGI card certificate, clearly describing the gold type, metal weight, and other specifications of the finished ring.
These certificates ensure authenticity, transparency, and confidence in your engagement ring purchase.
Every engagement ring is made to order. Production typically takes 2–4 weeks, followed by secure shipping. You will receive tracking information once your ring ships.
Absolutely. You can customize the diamond shape, carat weight, metal type, and ring style. If you have a specific design in mind, contact us and we can create a fully custom piece.
We offer a complete Ring Size Guide and can also assist with sizing questions. If the ring size isn’t perfect, we offer one free ring resizing within 30 days of delivery.
We offer:
14K/18K Yellow Gold
14K/18K White Gold
14K/18K Rose Gold
Platinum
We offer 30-day returns on unworn engagement rings. Custom fully-bespoke designs may be excluded—details are provided at checkout.
Yes. Lab-grown diamonds have the same physical, chemical, and optical properties as mined diamonds. The only difference is origin—not quality.
Yes. All Luminary Gem engagement rings include:
Free cleaning & inspection
One free resizing
30-day returns
Secure full-value shipping insurance