When it comes to buying a diamond—whether it’s for an engagement ring, anniversary gift, or heirloom piece—clarity and confidence are key. One of the most common questions we hear at Prins & Prins is: “How do I know if I’m buying a natural diamond or a lab-grown one?” With lab-grown diamonds becoming increasingly available, it’s more important than ever to know exactly what you’re investing in.
As Cape Town’s trusted name in certified natural diamonds and diamond jewellery, we’re here to demystify the difference—and to help you shop with confidence.
What’s the Difference Between Natural and Lab-Grown Diamonds?
At a glance, lab-grown and natural diamonds may appear nearly identical. Both are made of carbon and both can sparkle with brilliance. But their origins—and long-term value—are worlds apart.
Natural Diamonds are formed deep beneath the Earth’s surface over billions of years. Each one is a miracle of nature, making it truly one of a kind.
Lab-Grown Diamonds are created in high-tech laboratories over a matter of weeks using synthetic processes.
Although chemically similar, lab-grown diamonds do not carry the same rarity, symbolism, or enduring value as their natural counterparts.
Legal Labelling: What Retailers Are Required to Tell You
According to international trade regulations, a diamond can only be referred to as a “diamond” if it is natural. If the stone has been manufactured in a lab, it must be clearly and specifically labeled.
As highlighted in a video by the Diamond Learning Center titled “How do I know if I am buying a laboratory-grown diamond or a natural diamond?”, sellers are legally required to disclose whether a stone is lab-grown. Look out for terms like:
“Laboratory-Grown Diamond”
“Created Diamond”
“Synthetic Diamond”
Or the name of the manufacturer followed by “created”
If a stone is labeled simply as a “diamond,” it must, by definition and legal standard, be natural.
The Importance of a Diamond Grading Certificate
Whether you’re buying a diamond ring in Cape Town or shopping for loose stones, always request a grading certificate from a trusted gemological authority such as the GIA (Gemological Institute of America).
These certificates provide critical information including:
Cut, Colour, Clarity, and Carat (The 4Cs)
The origin of the diamond (natural or lab-grown)
Any treatments or enhancements
At Prins & Prins, every natural diamond we sell is accompanied by a reputable grading certificate, so you can be assured of both authenticity and value.
Can You Spot a Lab-Grown Diamond with the Naked Eye?
The short answer is: no. Even trained gemologists require advanced tools to detect the difference. That’s why it’s so important to buy from a reputable jeweller—one who is transparent about the origin of every stone.
The safest way to protect your investment? Shop with experts who specialise exclusively in natural, certified diamonds—like the team at Prins & Prins.
Why Choose Natural Diamonds from Prins & Prins?
At Prins & Prins, we are proud to offer only 100% natural, ethically sourced diamonds, expertly set into breathtaking jewellery. With over three decades of expertise, our legacy as one of the most trusted jewellers in Cape Town is built on:
Uncompromising quality
Transparent sourcing
Professional gemologists on-site
Independent grading certificates with every purchase
Whether you’re browsing our collection of diamond rings, earrings, pendants, or loose diamonds, you can rest assured you’re purchasing a natural treasure, crafted by nature, and certified by science.
Your Diamond. Your Legacy.
If you’re searching for diamond jewellery in Cape Town that tells a true story of love, celebration, and timeless value, visit our showroom at 66 Loop Street or get in touch with one of our gemologists today.
We’re here to help you select the perfect certified natural diamond—one you’ll be proud to wear or give for generations to come.
