The Brilliant Edit

How Long Does it Take to Grow a Diamond?

When it comes to fine jewelry, diamonds reign supreme as the timeless symbol of love and commitment. But have you ever wondered just how these sparkling gems are created? While mined diamonds take billions of years to form deep within the Earth’s surface, the revolutionary process of creating lab grown diamonds has a dramatically reduced timeframe.

At Grown Brilliance, we’re passionate about sharing the fascinating science behind lab diamonds. Discover how long it takes to grow these dazzling stones and prepare them for placement in a stunning lab grown diamond ring, bracelet or other fine jewelry. 

The Basics of Diamond Formation

Natural diamonds are some of the oldest known gems on our planet, formed over billions of years under immense heat and pressure conditions in the Earth’s mantle. This natural process involves carbon atoms crystallizing into the distinct cubic structure we recognize as a diamond.

However, thanks to advanced technology, scientists can now replicate these extreme geological conditions to create lab grown diamonds in a fraction of the time. Through specialized manufacturing methods, quality diamonds are created by carefully assembling carbon atoms to build the diamond crystal from the ground up.

The Two Main Methods for Growing Diamonds

The main techniques used to create lab diamonds are High Pressure, High Temperature (HPHT, and Chemical Vapor Deposition (CVD). The following are a few features of these methods of diamond production:

Factors Influencing the Growth Time

While the HPHT and CVD methods have reduced the timeframe for diamond creation compared to natural formation, a few elements still influence the growth process. The primary factor impacting growth time is the desired size of the final diamond:

  • Smaller diamonds. Smaller stones, around 1-2 carats, can typically be grown in 2-5 days using HPHT and 7 to 10 days via the CVD method. The accelerated growth time is due to the smaller size of the diamonds, which require fewer carbon atoms to assemble into the desired crystal structure.
  • Larger stones.  For diamonds in the 3-4 carat range, the growth process can take 10-19 days for CVD and 5-12 days for HPHT. Larger diamonds require the assembly of more natural gas carbon atoms, naturally extending the duration needed to form the crystal structure.
  • Over 5 carats. The time it takes to create a lab diamond slows down as its size increases. A large diamond over 5 carats can take several weeks (over 3 for CVD and more than 2 for HPHT) to create, especially for high-quality stones with few imperfections.

The quality and purity of the lab created diamond also affect the growth timeline. Producing flawless, high-clarity stones requires more precise control over the growth parameters, which can add time to the process. 

Carefully balancing these variables allows diamond producers to optimize the growth process and deliver the exceptional lab created diamonds that discerning customers demand.

The Finishing Touches

Once the initial diamond growth is complete, the lab created stone still requires additional processing to achieve its final, dazzling appearance. This post-growth phase involves careful cutting and polishing to maximize the diamond’s brilliance, fire and scintillation.

Skilled diamond cutters use specialized tools like saws and lasers to painstakingly shape the rough diamond into the desired cut, such as round brilliant, princess or cushion. This process can take 4 to 8 hours, as even the slightest miscalculation can compromise the stone’s proportions and optical performance.

After cutting, the diamond is polished to perfection, removing minor deficiencies and enhancing its clarity. This step ensures the lab created diamond shines to its full potential. Polishing a diamond can take days, weeks or months to complete as a final part of the preparation process.

Finally, the finished gem undergoes a rigorous inspection and certification process, typically taking a few days to a few weeks, before being set into elegant jewelry designs like a sparkling lab grown diamond tennis bracelet or an intricate diamond engagement ring.

Enjoy the Luxury of Lab Grown Diamonds with Grown Brilliance

At Grown Brilliance, we’re proud to offer an exquisite collection of lab grown diamonds in a variety of cuts, colors and carat weights. Whether you’re shopping for a stunning lab grown diamond engagement ring, a sparkling tennis bracelet or a unique piece of fashion jewelry, you’ll find it in our selection of pre-designed, customizable pieces.

Explore our online collection of lab grown diamond bracelets, rings and other fine jewelry to discover the perfect expression of your style. For a truly personalized experience, schedule a private consultation with our artisans. We’ll work closely with you to find a lab grown diamond that fits your budget and exceeds your expectations. 

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