HPHT VS. CVD LAB GROWN DIAMONDS


They’re Both Real Diamonds – But Their Origin Stories Are Wildly Different!

 

Meet the Makers: HPHT vs. CVD

 

HPHT (High Pressure, High Temperature)
What it is: Nature’s diamond-making process, but on fast-forward.
How it works:
Carbon + insane pressure + lava-hot temps (1400°C) + metal catalysts = diamond in a few weeks.
Best for:

Small to medium stones (1–2ct)

D–E color — icy white! ❄️

Great value 

 

 

CVD (Chemical Vapor Deposition)
What it is: Techy and futuristic — think diamonds grown in a high-tech greenhouse.
How it works:
Diamond “seed” + carbon-rich gas + microwave energy ⚡ = carbon layers grow into a crystal-clear diamond.
Best for:

Larger stones (3ct+) 

VVS clarity — super clean and stunning

Fancy shapes like ovals and pears

Great for those chasing big, bold sparkle

 

 

Quick Comparison

Feature HPHT CVD
Color Naturally high (D–F) May enhanced after growth
Clarity Might have tiny metal bits Typically cleaner
Best Shapes Round, classic cuts Fancy shapes (oval, pear, etc.)
Growth Time Weeks Longer — up to months
Eco Impact Energy-intensive Lower carbon footprint
Carat Range 1–2 ct sweet spot 3 ct+ champions
Price Tip Budget-friendly high color Untreated may premium price

 

 

Which Diamond Is Right for You?

 

Go for HPHT if you...

Love icy white D–F color

Want premium sparkle on a budget

Prefer smaller, classic-sized stones

 

Choose CVD if you…

Dream of big, bold center stones (3ct+)

Want near-flawless clarity

Love unique shapes and a cleaner origin story


 

Final Thoughts

Are you a “sparkling minimalist” or a “go-big-or-go-home” diamond fan?

Still unsure? Drop a comment — we’ll happily nerd out with you!

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FAQS

Are lab-grown diamonds just as durable as natural diamonds?

Yes, lab-grown diamonds possess the same durability as natural diamonds. Both are rated 10 on the Mohs scale of hardness, making them extremely resistant to scratches and ideal for daily use.

Do lab-grown diamonds come in a variety of sizes and shapes?

Absolutely! Lab-grown diamonds are available in a diverse array of sizes and shapes, similar to natural diamonds. From timeless round brilliant cuts to distinctive fancy shapes, there’s a lab diamond to match every style and preference.

Do lab-grown diamonds need any specific care or upkeep?

Lab-grown diamonds, much like their natural counterparts, don’t require any special care. They can be cleaned easily with mild soapy water and a soft brush or cloth. However, it’s advisable to periodically check the setting to ensure the diamond remains secure and well-maintained.

Is it possible to distinguish between lab-grown and natural diamonds just by looking at them?

No, you can't tell the difference between lab-grown and natural diamonds with the naked eye. They have identical physical and optical properties, so distinguishing them visually requires specialized tools.