CVD vs HPHT LAB DIAMONDS: WHICH SHOULD YOU CHOOSE? (2025 GUIDE)

 

Looking for the perfect lab-grown diamond?

At Frozen Gold Jewellers, we understand choosing between CVD and HPHT diamonds can feel overwhelming. Here’s a clear, updated guide to help you decide which type is right for your next piece of jewellery.

 

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WHAT ARE CVD & HPHT DIAMONDS?

 

 

CVD (CHEMICAL VAPOR DEPOSITION)

 

CVD diamonds are grown in a controlled chamber where layers of carbon are deposited to form a diamond.

They typically show excellent clarity (VVS–VS) and high colour grades (DEF), especially after post-growth treatments. Modern CVD diamonds are virtually indistinguishable from natural diamonds.

 

HPHT (HIGH PRESSURE HIGH TEMPERATURE)

 

HPHT diamonds are created by simulating the extreme pressure and temperature conditions found deep within the earth.

This method produces very clear, colourless stones (often VVS/VS clarity and DEF colour) and is commonly used for both small melee stones and larger centre diamonds.

 

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CVD vs HPHT: KEY DIFFERENCES

Feature	CVD Diamonds	HPHT Diamonds
Clarity	VVS–VS, minimal inclusions	VVS–VS, may contain metallic pinpoints
Colour	DEF, often post-treated	DEF, occasionally slight blue undertone
Price	Generally more affordable	Slightly higher, but still excellent value
Size Range	Perfect for both melee and large stones	Ideal for all sizes, especially melee
Visual Cues	Rare striations or growth patterns (minimal)	Rare metallic flecks under magnification

WHICH DIAMOND IS BEST FOR YOU?

 

✅ Choose CVD

 if you want:

• Clean, high-clarity stones for centrepieces

• Even colour across large surfaces

• Minimal inclusions and a more modern aesthetic

 

✅ Choose HPHT

 if you want:

• Classic diamond brilliance and strong sparkle

• Great value for pavé sets, grillz, or side stones

• Traditional diamond “look” at a competitive price

 

🔎 To the naked eye, both diamonds look virtually identical—both are 100% real and certified.

 

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WHY BUY LAB DIAMONDS FROM FROZEN GOLD JEWELLERS?

 

 

• 💎 Top Quality Only: Every stone is DEF colour, VVS/VS clarity — clearly labelled for full transparency

• 🌱 Ethical & Eco-Conscious: Sustainably grown and 100% conflict-free

• ✂️ Custom Cuts Available: Need a special size or shape? We’ll source or cut it for you

• 🚚 Fast, Tracked Shipping: Free worldwide delivery, insured and secure

• 🤝 Trusted Support: Speak directly with our diamond experts — no pressure, just clarity

 

 

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🔗

SHOP OUR LOOSE DIAMONDS

 

Explore our full range of loose CVD and HPHT lab diamonds in sizes 1mm to 3mm — ideal for grillz, rings, and detailed custom pieces.

👉 Shop Loose Lab Diamonds (1mm–3mm)

 

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FREQUENTLY ASKED QUESTIONS

 

Are lab diamonds real diamonds?

Yes. Lab-grown diamonds are chemically, physically, and optically identical to natural diamonds — and they test as real every time.

Can I get a diamond certificate?

Yes. Larger lab diamonds can be certified by leading gem labs on request. Smaller melee stones are batch-graded by expert gemologists.

Do you take custom orders?

Absolutely. Whether you need a rare shape or a specific size, we can source or cut to your exact needs. Just reach out to our team.

 

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FINAL THOUGHTS

 

Both CVD and HPHT lab diamonds are incredible options — combining real diamond beauty, ethical sourcing, and affordable pricing.

At Frozen Gold Jewellers, we take pride in offering some of the UK’s finest lab diamonds, delivered with full transparency and expert support.

💬 Have questions? Want to compare stones side by side? Get in touch today — your perfect piece starts here.