Flat Prong Round Shape Lab-Grown Diamond Solitaire Ring
This four-prong round lab-grown diamond solitaire ring features a sleek, contemporary prong design—crafted in high-polish 14K/18K gold, the structured prongs securely cradle the round diamond while letting light flood its facets for brilliant sparkle, it pairs seamlessly with casual tees, office blazers, or evening dresses, fitting morning coffee runs, work meetings, or anniversary dinners alike, grown sustainably (no mining), the diamond matches natural stones’ fire and durability, making it a chic choice for everyday wear, meaningful gifting, and timeless ethical luxury.
Ring Details
Diamond Type: Lab Grown Diamond
Diamond Shape: Round
Total Carat Weight: Available from 1.00 ct to 5.00 ct (custom sizes available)
Color Grade: D–F
Clarity Grade: VVS–VS
Cut Grade: Excellent
Certification: IGI Certified Diamond + IGI Certified Finished Ring
Metal Options: 14K or 18K Gold (White Gold, Yellow Gold, Rose Gold)
Setting Style: Solitaire
Band Width: 2.3 mm
Finish: High Polish
Ring Size: Made to order (US sizes available)
Craftsmanship & Care
Handcrafted and made to order
Designed for everyday wear and long term durability
Ethically created lab grown diamonds
Complimentary lifetime ring resizing (up to two times per year)
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