Certified Lab Diamonds

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Luxury Lab Grown Diamond Jewellery.

Exceptional D – F colour diamonds. New York inspired design.

Shop online or experience The Madison Collection at LeGassick.

Shop the Collection
Experience in person

Discover the world's finest lab diamond jewellery...

Lab grown diamond rings

Rings

Lady's ear wearing a pair of yellow gold hoop earrings with clear lab grown diamonds on a white background

Earrings

A close-up of a person's wrist wearing a delicate silver platinum bracelet with sparkling clear diamonds, set against a warm beige background with soft shadow patterns.

Tennis Bracelets

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Diamond Necklaces

Top view of the Flatiron Building with intricate architectural details on a transparent background

Experience...

The essence of elegance

From dainty classics that are perfect for daily adornment to chic, to trendsetting pieces designed to complement any occasion... our selection blends exquisite craftsmanship with modern sensibility.

A luxury jewelry display featuring yellow gold rings with diamond settings on dark green velvet display stands, alongside a matching diamond necklace on a green display bust. A gold brand plaque for 'The Madison Collection' is visible in the foreground.

Madison favourites...

Gold ring with a large diamond on a white background at LeGassick, Gold Coast, Australia.
 
Gold ring with a large diamond on a white background at LeGassick, Gold Coast, Australia.
Gold ring with a large diamond on a white background at LeGassick, Gold Coast, Australia.

Julie... Long Cushion Cut Lab-Grown Diamond Ring In Two-Tone 18ct Gold

From $4,895.00
Yellow gold lab grown diamond tennis bracelet on a white background at LeGassick, Gold Coast, Australia.
 
Yellow gold lab grown diamond tennis bracelet on a white background at LeGassick, Gold Coast, Australia.
Yellow gold lab grown diamond tennis bracelet on a woman's wrist at LeGassick, Gold Coast, Australia.
Yellow and white gold lab grown diamond tennis bracelets on a white background at LeGassick, Gold Coast, Australia.

Carrie... 5.40 Carat Lab Grown Diamond Tennis Bracelet In Yellow Gold

$6,795.00
Gold stud earrings with clear lab grown diamonds on a white background at LeGassick, Gold Coast, Australia.
 
Gold stud earrings with clear lab grown diamonds on a white background at LeGassick, Gold Coast, Australia.
Hand holding a pair of lab diamond stud earrings against a soft background at LeGassick, Gold Coast, Australia.
Gold stud earrings with clear lab grown diamonds on a white background at LeGassick, Gold Coast, Australia.

Charlotte... 4 Claw Lab Grown Diamond Stud Earrings In Yellow Gold

From $2,595.00
Gold ring with a lab grown solitaire diamond on a white background at LeGassick, Gold Coast, Australia.
 
Gold ring with a lab grown solitaire diamond on a white background at LeGassick, Gold Coast, Australia.
Gold ring with a lab grown solitaire diamond on a lady's hand at LeGassick, Gold Coast, Australia.
Gold ring with a lab grown diamond solitaire on a white background at LeGassick, Gold Coast, Australia.

Nicole... Round Brilliant Cut Lab Grown Diamond Solitaire Ring

From $4,895.00
Gold necklace with a lab grown diamond pendant on a white background at LeGassick, Gold Coast, Australia.
 
Gold necklace with a lab grown diamond pendant on a white background at LeGassick, Gold Coast, Australia.
Gold chain with clasp on a white background

Lucy… 0.25ct Oval Lab Grown Diamond Pendant With 9ct Gold Chain

$1,495.00
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Marla... Lab Grown Diamond Wedding Band in 18ct Gold
Marla... Lab Grown Diamond Wedding Band in 18ct Gold
Marla... Lab Grown Diamond Wedding Band in 18ct Gold

Marla... Lab Grown Diamond Wedding Band in 18ct Gold

From $2,495.00
Pair of white gold hoop earrings with clear lab grown diamonds on a white background
 
Pair of white gold hoop earrings with clear lab grown diamonds on a white background
Lady's ear wearing a pair of white gold hoop earrings with clear lab grown diamonds on a white background
A pair of yellow gold hoop earrings with clear lab grown diamonds on a white background

Anna... Inside Out Lab Grown Diamond Huggie Earrings

$4,995.00
A five-stone diamond ring with a yellow gold band and a white gold setting, shown on a clean white background.
 
A five-stone diamond ring with a yellow gold band and a white gold setting, shown on a clean white background.
A yellow gold diamond ring with five round-cut diamonds set in a half-moon shape on a white background.

Felicity… 18ct Two-Tone 1.50 Carat Lab Grown Diamond Set Ring

$7,995.00

Shop the complete collection...

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The Brooklyn Bridge at night, New York City.

New York State Of Mind

Learn the inspiration and passion for the collection.

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Certified diamonds

Every diamond is independently certified for quality and authenticity, giving you confidence and peace of mind with every purchase.

Free insured delivery

Enjoy peace of mind with complimentary, fully insured delivery on every Madison Collection purchase... safe, secure, and delivered right to your door.

Rigid quality standards

From hand-selected gemstones to expert craftsmanship, we uphold the highest standards to ensure enduring beauty and exceptional value in every piece.

Here to help

Our friendly and knowledgeable team is here to guide you every step of the way… offering expert advice, personalised service, and genuine care.

The Madison Collection

Luxury Lab Grown Diamond Jewellery in Australia

The Madison Collection offers luxury lab grown diamond jewellery designed with timeless elegance and modern sophistication. Explore diamond rings, earrings, necklaces and tennis bracelets featuring the world’s whitest lab grown diamonds. Inspired by the style and glamour of New York City, our collections are crafted to celebrate life’s special moments with exceptional beauty and craftsmanship. Shop luxury lab diamond jewellery online in Australia with fast delivery and exclusive contemporary designs.

Certified Lab Diamonds

14 Day Money Back Guarantee

FREE Shipping Australia Wide