When it comes to choosing the perfect diamond, today’s jewellery lovers are faced with an exciting array of options. Among them, lab-grown diamonds have emerged as a dazzling contender, blending timeless beauty with modern values. At Lester and Brown, we’re proud to champion these innovative gems, offering lab-grown diamond engagement rings that capture elegance without compromise.
Unlike their natural counterparts, which form over millions of years beneath the Earth’s surface, lab-grown diamonds are crafted in cutting-edge laboratories in a matter of weeks. Yet, they share the same breathtaking sparkle and durability, certified by globally respected bodies like the International Gemological Institute (IGI), widely recognised in the UK for its rigorous standards. The difference lies not in their brilliance but in their story—one of sustainability, affordability, and transparency. In this article, we’ll explore what sets lab-grown diamonds apart, why they’re a perfect fit for today’s conscious consumer, and how Lester and Brown brings them to life in jewellery that’s as meaningful as it is beautiful.
Our Commitment to Lab-Grown Diamonds
Our passion for lab-grown diamonds stems from a deep commitment to sustainability and knowing exactly where our materials come from—values you’ll hear straight from our owners in the video above. Unlike the often murky origins of mined diamonds, lab-grown stones offer full transparency, crafted in controlled environments that sidestep the environmental and ethical concerns tied to traditional mining. We’ve heard from our customers that this matters: many choose lab-grown diamonds not just for their remarkable value—often up to 80% less than mined stones—but because they want a piece that reflects their heart and conscience. Whether it’s a classic white diamond or a vibrant coloured gem, every piece we create is designed to shine as brightly as your story, without casting a shadow on the planet.
How Lab-Grown Diamonds Come to Life
Ever wondered how a diamond can be crafted in a lab rather than unearthed from the ground? At Lester and Brown, we’re fascinated by the science behind these gems, which are brought to life using two remarkable methods: High Pressure/High Temperature (HPHT) and Chemical Vapour Deposition (CVD). With HPHT, a tiny diamond seed is subjected to intense heat—up to 1500°C—and crushing pressure, mimicking the Earth’s natural forces as carbon atoms build layer by layer into a sparkling stone. Meanwhile, CVD takes a futuristic approach, placing a diamond sliver in a sealed chamber filled with carbon-rich gases like methane, heated to around 800°C. Over 6 to 10 weeks, these gases transform into a crystalline gem.
The result? Diamonds that rival nature’s finest, available in sizes up to 20 carats and shades from classic white to vivid pink or blue—perfect for every love story we help tell. With HPHT, a tiny diamond seed is subjected to intense heat—up to 1500°C—and crushing pressure, mimicking the Earth’s natural forces as carbon atoms build layer by layer into a sparkling stone. Meanwhile, CVD takes a futuristic approach, placing a diamond sliver in a sealed chamber filled with carbon-rich gases like methane, heated to around 800°C. Over 6 to 10 weeks, these gases transform into a crystalline gem. The result? Diamonds that rival nature’s finest, available in sizes up to 20 carats and shades from classic white to vivid pink or blue—perfect for every love story we help tell.
Brilliance You Can Trust
What truly sets lab-grown diamonds apart is their accessibility without sacrificing quality. Just like mined diamonds, every lab-grown gem at Lester and Brown is meticulously graded on the 4Cs—cut, colour, clarity, and carat weight—by experts like the International Gemological Institute (IGI), ensuring they meet the same exacting standards. But here’s the game-changer: these stones typically cost 20-40% less than their natural counterparts, making elegance more attainable than ever. While their value may not hold over time like mined diamonds, their lifespan and sparkle are identical, offering enduring beauty without the hefty price tag. For us, it’s about more than affordability—it’s about giving you a sustainable, transparent choice that shines as brightly as your commitment, whether it’s through our lab-grown diamond engagement rings or a bespoke piece from our coloured diamond marketplace.
Final Thoughts
Lab-grown diamonds represent a new era in fine jewellery—one where beauty, ethics, and value come together in perfect harmony. At Lester and Brown, we believe your jewellery should reflect not only your personal style but also your principles. Whether you're drawn to the timeless elegance of white diamonds or the vibrant individuality of coloured stones, our carefully curated collections are here to inspire. With full transparency, expert guidance, and a commitment to sustainability at every step, we're proud to offer diamonds that shine with purpose. Explore our marketplace and discover a piece that tells your story, brilliantly.
If you want to visit us in store and get in touch with one of our master craftsmen, get in touch here
Frequently Asked Questions
1. Can we help you choose the right lab-grown diamond?
Absolutely! Whether you're overwhelmed by the options or unsure where to start, our team is here to guide you. From explaining the 4Cs to helping you compare shapes, sizes, and colours, we’ll work with you to find the perfect stone that fits your style, values, and budget. Just get in touch, and we’ll be happy to help.
2. Are lab-grown diamonds real diamonds?
Yes—lab-grown diamonds are 100% real diamonds. They share the same physical, chemical, and optical properties as mined diamonds and are graded by the same respected institutions like the IGI. The only difference is their origin: lab-grown diamonds are created in modern laboratories rather than deep within the Earth.
3. Will a lab-grown diamond hold its value over time?
Lab-grown diamonds offer exceptional beauty and durability but typically don't appreciate in value like mined diamonds. That said, they provide incredible savings—often 20–40% less—making them a smart, sustainable choice for couples who want stunning quality without the higher price tag.
4. What’s the difference between HPHT and CVD lab-grown diamonds?
Both methods create high-quality diamonds, but the process differs. HPHT mimics the Earth's natural conditions using extreme heat and pressure, while CVD grows diamonds in a carbon-rich gas chamber at lower temperatures. Each method produces beautiful results—our experts can help you choose based on your preferences.
5. Are lab-grown diamonds ethical and sustainable?
Yes. Lab-grown diamonds are created in controlled environments, avoiding the environmental damage and ethical concerns often associated with traditional mining.
6. How do lab-grown diamonds compare in quality to mined diamonds?
Lab-grown diamonds are identical in brilliance, durability, and chemical composition to mined diamonds. They are graded on the same 4Cs—cut, colour, clarity, and carat weight.
7. Can I get a coloured lab-grown diamond?
Absolutely. Lab-grown diamonds are available in a range of colours, including classic white, pink, blue, and more, offering unique options for every style.
8. How long does it take to create a lab-grown diamond?
Depending on the method (HPHT or CVD), it typically takes between 6 to 10 weeks to grow a high-quality diamond.
9. Are lab-grown diamonds more affordable than mined diamonds?
Yes. Lab-grown diamonds often cost 20–40% less than their natural counterparts, making luxury jewellery more accessible without compromising on beauty or quality.
10. Can I have a bespoke piece made with lab-grown diamonds?
Yes. Lester and Brown offers bespoke services for engagement rings or coloured diamond creations, allowing you to design a piece that tells your unique story.