Lab Grown Diamonds

in Cape Town

Discover stunning Lab Grown Diamonds

at Grand Diamonds

Discover stunning lab grown diamonds at Grand Diamonds – scientifically perfected and beautifully crafted into timeless jewellery.

Our lab grown diamond collection offers the brilliance, durability, and luxury of natural diamonds at a more accessible price, making premium jewellery attainable without compromise.

Whether you’re searching for an engagement ring, wedding band, or custom design, our Cape Town showroom and online store offer exceptional quality and expert guidance.

What are Lab Grown Diamonds?

Lab grown diamonds are real diamonds created using advanced technology that replicates natural diamond formation.
They are:

  • Chemically identical to mined diamonds
  • Physically identical to mined diamonds
  • Visually indistinguishable
  • Independently certified

The only difference is their origin – grown in a laboratory rather than mined from the earth.

At Grand Diamonds, all our lab grown diamonds are responsibly sourced and fully certified.

Why Choose Lab Grown Diamonds

from Grand Diamonds?

Ethical & Sustainable

Our lab grown diamonds are conflict-free and environmentally responsible, with a significantly lower carbon footprint.

Exceptional Value

Enjoy diamonds that are up to 60-80% more affordable than natural diamonds of the same quality.

Certified Quality

Our lab grown diamonds are conflict-free and environmentally responsible, with a significantly lower carbon footprint.

Custom Craftsmanship

Design your own ring or choose from our curated collection, handcrafted by our skilled jewellers.

Trusted Local Expertise

With years of experience in fine jewellery, we provide personalised service and after-sales support.

Shop

Lab Grown Diamond Jewellery

Browse our exclusive collection of lab grown diamond jewellery, carefully curated for modern couples and discerning buyers.

Engagement Rings

Sale
18kt Rose Gold
18kt White Gold
18kt Yellow Gold
9kt Rose Gold
9kt White Gold
9kt Yellow Gold
Platinum

Alexandra

Starting from R11 250,00
Alexandra is a contemporary design featuring an Oval cut center diamond set in sharp cat claws for an edgy yet refined finish. The band is accented with a striking layout of small pear-shaped diamonds. The pears create a modern sculptural silhouette that is fresh and effortlessly stylish. Various stone sizes available on request.
Inquiry This product has multiple variants. The options may be chosen on the product page
Sale
18kt Rose Gold
18kt White Gold
18kt Yellow Gold
9kt Rose Gold
9kt White Gold
9kt Yellow Gold
Platinum

Camilla

Starting from R11 700,00
Camilla showcases understated power. A sleek tube-set solitaire that speaks volumes in quiet confidence and timeless poise. Various stone sizes available on request.
Inquiry This product has multiple variants. The options may be chosen on the product page
Sale
18kt Rose Gold
18kt White Gold
18kt Yellow Gold
9kt Rose Gold
9kt White Gold
9kt Yellow Gold
Platinum

Charlotte

Starting from R14 400,00
Charlotte is the perfect embodiment of romance and graceful feminity. At its heart lies a dazzling round brilliant center stone framed by a delicate milgrain band adorned with alternating marquise cut and small round diamonds. The detailed arrangement creates a vintage lace-like effect that sparkles from every angle. Various stone sizes available on request.
Inquiry This product has multiple variants. The options may be chosen on the product page
Sale
18kt Rose Gold
18kt White Gold
18kt Yellow Gold
9kt Rose Gold
9kt White Gold
9kt Yellow Gold
Platinum

Cushion & Round Trilogy Engagement Ring

Starting from R16 200,00
Our Cushion and Round Trilogy Engagement Ring features a Cushion center stone with smaller round cut stones on each side representing your past, present, and future. Expertly crafted for maximum sparkle, this elegant design offers classic beauty with meaningful charm.
Inquiry This product has multiple variants. The options may be chosen on the product page
Sale
18kt Rose Gold
18kt White Gold
18kt Yellow Gold
9kt Rose Gold
9kt White Gold
9kt Yellow Gold
Platinum

Cushion Cut Halo Engagement Ring

Starting from R22 500,00
Our Cushion Cut Halo Ring showcases a radiant cushion-shaped center stone, elegantly set in a delicate four-claw setting. A fine micro pavé halo surrounds the center, adding extra sparkle, while the slender micro pavé band completes the look with timeless sophistication
Inquiry This product has multiple variants. The options may be chosen on the product page
Sale
18kt Rose Gold
18kt White Gold
18kt Yellow Gold
9kt Rose Gold
9kt White Gold
9kt Yellow Gold
Platinum

Cushion Cut Pavé Engagement Ring

Starting from R17 550,00
Our Cushion Cut Pavé Ring showcases a Cushion center stone, elegantly set in a delicate four-claw setting with a hidden halo for extra sparkle. A pavé band completes the look with timeless sophistication
Inquiry This product has multiple variants. The options may be chosen on the product page

Wedding Bands

18kt Rose Gold
18kt White Gold
18kt Yellow Gold
9kt Rose Gold
9kt White Gold
9kt Yellow Gold
Platinum

Baguette Half Eternity Band

Starting from R13 000,00
Our Baguette Half Eternity Ring is made up of 8 Baguette Stones with a total Carat weight of 0.88ct. Each ring in this collection is an absolute show stopper. The perfect anniversary gift, wedding band or self purchase.
Inquiry This product has multiple variants. The options may be chosen on the product page
18kt Rose Gold
18kt White Gold
18kt Yellow Gold
9kt Rose Gold
9kt White Gold
9kt Yellow Gold
Platinum

Classic Flat Band

Starting from R8 500,00
A timeless symbol of commitment, this classic flat wedding band is crafted in radiant white, yellow or rose gold with a clean, minimalist profile. Its flat surface and polished finish offer a modern yet enduring look, perfect for those who appreciate subtle elegance. Designed for comfort and everyday wear.
Inquiry This product has multiple variants. The options may be chosen on the product page
18kt Rose Gold
18kt White Gold
18kt Yellow Gold
9kt Rose Gold
9kt White Gold
9kt Yellow Gold
Platinum

Classic Full Eternity Wedding Band

Starting from R25 000,00
Our Classic Round Cut Full Eternity Ring is made up of 19 Round Brilliant Cut Stones with a total Carat weight of 3.2ct. Each ring in this collection is an absolute show stopper. The perfect anniversary gift, wedding band or self purchase.
Inquiry This product has multiple variants. The options may be chosen on the product page
18kt Rose Gold
18kt White Gold
18kt Yellow Gold
9kt Rose Gold
9kt White Gold
9kt Yellow Gold
Platinum

Classic Half Eternity Wedding Band

Starting from R10 500,00
Our Petite Classic Half Eternity Ring is made up of 22 Round Brilliant Cut Stones with a total Carat weight of 0.22ct. Each ring in this collection is an absolute show stopper. The perfect anniversary gift, wedding band or self purchase.
Inquiry This product has multiple variants. The options may be chosen on the product page
18kt Rose Gold
18kt White Gold
18kt Yellow Gold
9kt Rose Gold
9kt White Gold
9kt Yellow Gold
Platinum

Curved Half Eternity Band

Starting from R14 500,00
Our Slightly Curved Half Eternity Ring is made up of 9 Round Brilliant Cut Stones with a total Carat weight of 0.63ct. Each ring in this collection is an absolute show stopper. The perfect anniversary gift, wedding band or self purchase.
Inquiry This product has multiple variants. The options may be chosen on the product page
18kt Rose Gold
18kt White Gold
18kt Yellow Gold
9kt Rose Gold
9kt White Gold
9kt Yellow Gold
Platinum

Flat Band with Swiss Set Diamonds

Starting from R11 000,00
Featuring Swiss-set round brilliant Natural, Lab-Grown Diamonds or Moissanite stones spaced evenly around the band, this design offers just the right amount of sparkle for everyday wear or a meaningful wedding band. Clean lines, a polished finish, and timeless style make it a versatile piece. Available in your choice of metal and diamond sizes to suit your unique preference.
Inquiry This product has multiple variants. The options may be chosen on the product page

Each piece is crafted using premium metals including platinum, white gold, yellow gold, and rose gold.

Lab Grown vs Natural Diamonds

Feature

Lab Grown Diamonds

Natural Diamonds

Origin

Laboratory created

Earth mined

Appearance

Identical

Identical

Certification

IGI

GIA / IGI

Price

More affordable

Higher Cost

Both options are diamonds – the choice depends on your values, budget, and personal preference. Our consultants are happy to guide you through both options.

Read through our lab grown vs natural diamonds guide for more

How to Choose the Right

Lab Grown Diamond

When selecting a lab grown diamond, consider the 4Cs:

Cut

Determines brilliance and sparkle. Always prioritise excellent or very good cuts.

Colour

Most popular: D-G range for bright white appearance.

Clarity

VS1–SI1 offers the best balance of beauty and value.

Carat

Choose size based on your budget and setting preference.

Our specialists will help you select the perfect balance for your needs.

Custom Lab Grown Diamond Rings

Looking for something unique?
We offer a full custom design service for lab grown diamond jewellery.

Our Process

1.

Consultation (online or in-store)

2.

Design & CAD rendering

3.

Diamond selection

4.

Manufacturing

Create a one-of-a-kind engagement ring designed around your story.

Visit Our Cape Town Showroom

Experience our lab grown diamond collection in person at our Cape Town showroom.

  • Private consultations
  • Diamond viewing
  • Ring sizing
  • Design advice

Book an appointment to receive personalised guidance from our experts.

Frequently Asked Questions

FAQ

Are lab grown diamonds real diamonds?

Are lab grown diamonds real diamonds?
Yes. Lab grown diamonds are real diamonds that are chemically, physically, and optically identical to mined diamonds. The only difference is their origin - lab grown diamonds are created in a controlled laboratory environment rather than formed naturally in the earth. They are independently certified and graded using the same standards as natural diamonds, including cut, colour, clarity, and carat weight.

Do lab grown diamonds hold their value?

Lab grown diamonds offer excellent value for money, allowing you to purchase a larger or higher-quality diamond at a more accessible price compared to mined diamonds. While all diamonds, both natural and lab grown, should be viewed primarily as a meaningful purchase rather than a financial investment, lab grown diamonds are ideal for buyers prioritising beauty, ethics, and affordability. Their true value lies in their identical brilliance, certified quality, and lasting durability.

Are lab grown diamonds certified?

Yes. All our lab grown diamonds are independently certified and laser inscribed for your peace of mind. Our lab grown diamonds are graded by leading gemological laboratories such as GIA or IGI, using the same standards applied to natural diamonds, including cut, colour, clarity, and carat weight.

Can I customize my ring?

Absolutely. Custom engagement rings are at the heart of what we do. We specialise in designing bespoke lab grown diamond engagement rings tailored to your style, story, and budget. From selecting your diamond shape and size to choosing your preferred metal and setting, our team will guide you through every step; from consultation and CAD design to final craftsmanship.

Start the process: Design Your Own / Custom Engagement Rings 

Do you offer financing?

We require a 50% deposit to begin manufacturing your ring, with the remaining 50% due upon completion before collection or delivery.

For orders below ZAR 20,000, we offer Payflex as a convenient payment option, allowing you to split your purchase into interest-free instalments.

Book

Your Consultation

Ready to find your perfect lab grown diamond?

Visit Our Showroom

Walk-In Clients Are Most Welcome! BOOKING ADVISED

Trading Hours:

Monday – Thursday: 09h00 – 17h00
Friday: 09hoo – 16h30
Saturday: 09h30 – 12h30

OUR ADDRESS

Cape Town

Showroom 6A, Foyer B, Sovereign Quay, 34 Somerset Rd,
Green Point, Cape Town, 8001

FREE OFF STREET PARKING

Email:  sales@granddiamonds.co.za

Phone:  021 418 2880
Whatsapp:  066 261 6583

Chat to us

CONTACT FORM

Let us help you create something extraordinary.