PREMIUM LOOSE LAB-GROWN DIAMONDS | ROUND BRILLIANT CUT, VS-VVS, DEF | 3.5MM–6MM | SOLD BY CARAT

Discover our premium selection of larger loose lab-grown diamonds, ideal for centre stones, accent clusters, rings, pendants, and statement jewellery. These stones are cut to perfection, available in both CVD and HPHT growth types, and come in brilliant DEF colour range.

This product includes round brilliant diamonds ranging from 3.5mm to 6mm, available in both:

CVD – premium quality
HPHT – excellent value

All stones fall within the DEF colour range (bright white), ethically grown and precision-cut for maximum sparkle.

Choose your:
• Size: 3.5mm, 4mm, 5mm and 6mm
• Type: CVD or HPHT
• Carat Weight: 0.5ct, 1ct, 2ct, 5ct, 10ct

Each carat contains fewer stones compared to melee sizes — perfect for jewellers, resellers, or clients sourcing signature stones for their custom piece.

💎 Clarity: VVS – VS
💎 Colour: D–E–F (Bright White)
💎 Cut: Round Brilliant
💎 Use: Engagement rings, custom jewellery, pendants, cluster sets, resale
💎 Format: Loose stones in sealed, labelled pack

Need a custom shape or a different size?

👉 Message us directly via Instagram or WhatsApp – we offer oval, cushion, pear, radiant, marquise and more.

📲 Instagram: @frozengoldjewellers
📱 WhatsApp: +44 7393 711725

Frozen Gold – Where custom meets quality.

DEF colour round brilliant lab diamonds grown using CVD or HPHT methods. Each carat-weight pack contains loose stones with clarity ranging from VVS to VS. Cut and symmetry are ideal or excellent, selected for brilliance and consistency.

Available in both CVD and HPHT growth types. All stones fall within the DEF colour range and clarity grades of VVS to VS. Round brilliant is the default cut, but oval, cushion, radiant, pear and other fancy shapes are available by request.

Available in 3.5mm, 4mm, 5mm and 6mm. These are ideal sizes for centre stones in rings, pendants, tennis chains, or standout cluster settings.

Larger lab-grown stones like these offer show-stopping presence at a fraction of the price of mined diamonds. Whether you’re reselling or creating a custom piece, they give your project brilliance, value, and flexibility. Ideal for solitaire rings, bezel settings, pendants, and standout clusters.

Loose diamonds are usually in stock and ready for immediate dispatch. If not in stock, we will still have your selection shipped within 7 days. Each order is securely packed and labelled by size, growth type, and carat.

We provide FREE 4-7 day international shipping from the UK. Every order is fully insured and shipped directly to your doorstep for a secure and seamless delivery experience. Signature upon delivery may be required for added security.

Shipping Methods

• DHL Express
• FedEx International Priority

Shipping Times

• UK: 2-4 business days
• Europe: 3-5 business days
• US & Canada: 4-7 business days
• Australia & New Zealand: 5-7 business days
• Rest of the World: 5-10 business days
• Rush Orders: Expedited production and shipping options available upon request.

Q: Are lab diamonds real diamonds?

Yes. Lab diamonds have the same chemical, optical, and physical properties as natural diamonds. They test as real diamonds and are indistinguishable to the naked eye — even under most tools.

Q: Do your diamonds come certified?

Our larger diamonds can come certified on request. Smaller melee stones and loose parcels are batch-tested and graded by expert gemologists for accuracy and consistency.

Q: Can I request custom shapes or sizes?

Absolutely. We can source custom cuts such as oval, cushion, radiant, pear, heart and more. Contact us directly to discuss your needs.

Q: Are the diamonds in stock and ready to ship?

Loose diamonds are usually pre-stocked and ready for immediate dispatch. In the rare case they’re not in stock, we’ll still ship them out within the week.

Lab-grown diamonds are real diamonds — not imitations. They are created in highly controlled laboratory environments using advanced technology that replicates the conditions under which natural diamonds form beneath the Earth’s crust.

At Frozen Gold, we only offer lab diamonds with excellent cut, colour, and clarity, visually and chemically identical to mined diamonds. Each one is conflict-free, more sustainable, and offers far better value per carat.

Whether you’re a jeweller or a private client, lab diamonds provide high brilliance without compromising on ethics or quality.

Both HPHT (High Pressure High Temperature) and CVD (Chemical Vapour Deposition) are advanced methods for growing diamonds.

• 
  Produces diamonds with higher clarity (often VVS) and less fluorescence. They are popular for luxury jewellery due to their clean appearance and exceptional brilliance.
  
• 
  Slightly more affordable, typically graded VS clarity. These diamonds often show stronger sparkle and are ideal for pavé, side stones, and grillz.
  

We offer both types to suit your specific needs and budget — and we clearly label all our stones so you can choose with confidence.

Lab diamonds offer the perfect blend of luxury, ethics, and value. Whether you’re a jeweller, creative, or private client, choosing lab-grown diamonds means you get the beauty and brilliance of natural diamonds — at a better price, with a cleaner conscience.

Here’s why more and more serious buyers are switching to lab diamonds:

✅ Visually Identical to Natural Diamonds

Same sparkle, same structure — they test as real diamonds and look flawless in any setting.

✅ Better Value per Carat

You get more size and quality for your money, allowing for larger stones or more intricate custom designs.

✅ Ethically Sourced & Conflict-Free

No mining. No human cost. Just clean, sustainable brilliance.

✅ Premium Quality Options

Frozen Gold offers only the highest colour and clarity grades (DEF colour, VVS/VS clarity), whether you choose CVD or HPHT.

✅ Ideal for Custom Projects & Resale

Lab diamonds are perfect for jewellers, resellers, and individuals looking to invest in custom rings, pendants, grillz, and more.

Best Use Cases:

Lab diamonds aren’t a downgrade — they’re the smarter upgrade.