4CT Lab Grown Diamond

18K White Gold18K White Gold
18K Yellow Gold18K Yellow Gold
18K Rose Gold18K Rose Gold
PlatinumPlatinum

18 Karat White, Yellow, Rose Gold or Platinum

From $3,300.00
18K White Gold18K White Gold
18K Yellow Gold18K Yellow Gold
18K Rose Gold18K Rose Gold
PlatinumPlatinum

18 Karat White, Yellow, Rose Gold or Platinum

From $3,300.00
18K White Gold18K White Gold
18K Yellow Gold18K Yellow Gold
18K Rose Gold18K Rose Gold
PlatinumPlatinum

18 Karat White, Yellow, Rose Gold or Platinum

From $3,300.00
18K White Gold18K White Gold
18K Yellow Gold18K Yellow Gold
18K Rose Gold18K Rose Gold
PlatinumPlatinum

18 Karat White, Yellow, Rose Gold or Platinum

From $3,300.00
18K White Gold18K White Gold
18K Yellow Gold18K Yellow Gold
18K Rose Gold18K Rose Gold
PlatinumPlatinum

18 Karat White, Yellow, Rose Gold or Platinum

From $3,300.00
18K White Gold18K White Gold
18K Yellow Gold18K Yellow Gold
18K Rose Gold18K Rose Gold
PlatinumPlatinum

18 Karat White, Yellow, Rose Gold

From $7,000.00
18K White Gold18K White Gold
18K Yellow Gold18K Yellow Gold
18K Rose Gold18K Rose Gold
PlatinumPlatinum

18 Karat White, Yellow, Rose Gold or Platinum

From $3,600.00
18K White Gold18K White Gold
18K Yellow Gold18K Yellow Gold
18K Rose Gold18K Rose Gold
PlatinumPlatinum

18 Karat White, Yellow, Rose Gold or Platinum

From $5,100.00
18K White Gold18K White Gold
18K Yellow Gold18K Yellow Gold
18K Rose Gold18K Rose Gold
PlatinumPlatinum

18 Karat White, Yellow, Rose Gold or Platinum

From $5,100.00
18K White Gold18K White Gold
18K Yellow Gold18K Yellow Gold
18K Rose Gold18K Rose Gold
PlatinumPlatinum

18 Karat White, Yellow, Rose Gold or Platinum

From $4,300.00
18K White Gold18K White Gold
18K Yellow Gold18K Yellow Gold
18K Rose Gold18K Rose Gold
PlatinumPlatinum

18 Karat White, Yellow, Rose Gold or Platinum

From $4,300.00
18K White Gold18K White Gold
18K Yellow Gold18K Yellow Gold
18K Rose Gold18K Rose Gold
PlatinumPlatinum

18 Karat White, Yellow, Rose Gold or Platinum

From $4,300.00

Lab Grown Diamonds in 4 Carat Cuts

Solitaire Jewellery’s 4ct lab grown diamond ring range offers bold size, lab certified quality and competitive pricing. Whether you're buying for a proposal or a personal milestone, this collection delivers clarity and presence with a transparent sourcing process. These rings are made for those who want their jewellery to carry weight, both in carat and confidence.

Shop 4ct Lab Grown Diamond Ring Designs

This collection brings together size, quality and value. A 4ct lab grown diamond ring offers a strong presence and highlights the importance of cut and clarity. At Solitaire Jewellery, you'll find a   curated selection designed for modern Australian buyers who prefer standout rings without inflated pricing.

Explore this range for engagement rings, luxury gifts or to upgrade an existing piece with something truly eye-catching. These diamonds are selected for their clarity and cut, delivering a refined finish that works just as well for daily wear as it does for special occasions.

Why a 4ct Lab Grown Diamond Ring Offers Smarter Value

A 4 carat lab grown diamond gives you significant size and strong clarity at a more practical value. These stones share the same chemical and visual properties as mined diamonds and come with IGI or GIA certification. The difference lies in how they’re made and the clarity around their sourcing.

Solitaire’s lab grown diamond range focuses on transparency, finish and value. Each ring is reviewed locally before it’s shipped to ensure it meets our in-house benchmarks. This way, clients get consistency in carat, colour and clarity without inflated markups or lengthy delays.

Centred on Quality and Lasting Style

This collection combines strong size, certified quality and styling flexibility. A 4ct lab grown diamond ring highlights cut and clarity without compromising on comfort or proportion. Solitaire Jewellery offers a curated range suited to those looking for standout rings across different occasions.

Shapes include round, oval, emerald and pear cuts. Clients can choose from platinum, white gold, yellow gold and rose gold settings. Whether minimal or detailed, each ring is designed to work across engagement, gifting or collection upgrades. The 4 carat size delivers presence without excess.

To explore similar styles, visit the rings or diamond rings categories.

Popular Settings in This Range

  • Solitaire for a clean and focused look
  • Halo to add sparkle and give the illusion of even more size
  • Three-stone for a balanced and elegant feel
  • Hidden details for those who prefer subtle personal features

Whether you’re upgrading your collection or planning to propose, you can browse our engagement rings for more purpose-driven designs.

Certified Lab Diamonds with Reliable Sourcing

All Solitaire Jewellery’s lab grown diamonds are certified by IGI or GIA. These stones are grown under monitored conditions and finished using professional cutting and polishing processes. That gives each stone reliable grading and traceable sourcing.

Check out our lab grown diamond rings to compare styles, sizes and pricing. Our online selection is kept up to date with real-time availability and local production timelines.

Make It Personal with Metal, Shape and Style Options

A 4ct diamond ring makes a strong impact. Whether you’re looking for a one-of-a-kind statement ring, stacking with stackable rings, or updating with a custom signet ring, we offer a full suite of options.

Our team is available to help with resizing, custom settings, or stone upgrades. All modifications are managed in-house to ensure quality and timeline control. These are real rings, made to be worn and noticed.

Local Service, Fast Delivery

Every 4ct lab grown diamond ring is prepared in our Australian studio, with complete certification and inspection. Orders ship securely, with tracking and size confirmation included. Whether you’re buying online or visiting us in person, our team ensures the final piece meets the standard you expect.