Elegance, Perfected.
Exceptional Diamonds. Without the Traditional Markup.
Bespoke lab diamond jewellery, exclusively in D–E colour and VVS–VS clarity.
Your Diamond Essentials
At the Very Best Price
Your Private Diamond Concierge
Harper Jewellery Diamonds is a private diamond house specialising in certified natural and lab-grown diamonds. We work exclusively with eye-clean diamonds, colourless D to F colour and VVS - VS clarity — exceptional quality, without the traditional retail markup.
Exceptional quality is our standard, never an upgrade. If you have found Harper, you have discovered something truly special.
The Harper Difference
Compare the market, then discover why so many clients return to Harper. Through our direct-to-client pricing model, we offer exceptional craftsmanship, certified diamonds, and extraordinary quality at a price that simply makes sense.
Our Cult-Favourite Tennis Necklaces
The Art of Everyday Luxury
Discover Our Natural Diamonds Collection
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At Harper Jewellery, luxury is personal, considered, and uncompromising.
As your private Diamond Concierge, we work directly with master jewellers and diamond merchants to source exceptional natural and lab-grown diamonds. We work exclusively with colourless D–E diamonds, VS clarity or higher, selected to be beautifully eye-clean and chosen for exceptional cut, brilliance and fire.
By operating without traditional retail layers, we offer extraordinary quality, precision craftsmanship and refined design with complete transparency.
Every Harper piece is meticulously crafted to endure — designed to be worn effortlessly and treasured for a lifetime. From rare natural diamonds to exceptional lab-grown stones and fine moissanite, every creation reflects our unwavering standard for beauty, balance and brilliance.
From our first conversation to final delivery, we guide you through a discreet, bespoke experience, translating your vision into a piece of true significance.
Luxury, without excess. Craftsmanship, without compromise.
This is the Harper difference.
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Australia & Worldwide
We are delighted to offer complimentary Express Shipping across Australia and worldwide.
Please allow 1–3 business days for delivery within Australia and 7–10 business days for international deliveries once your order has been dispatched.
All parcels include full tracking and require a signature upon delivery for your peace of mind.
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We offer a flexible 30-day return window for change-of-mind purchases on unworn, non-custom pieces in their original condition and packaging.
Should you wish to return an item, we will provide a Harper Jewellery store credit, valid for life, so you can choose another piece at your leisure.
Custom and made-to-order items are considered final sale unless faulty.
Please refer to our full Returns Policy here.
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Absolutely. Our Sydney showroom is available by appointment only for private viewings. Please contact us at customercare@harperjewellery.com.au.
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For every bespoke lab-grown and natural diamond piece, we provide documentation outlining an estimated replacement value, together with the diamond grading and jewellery specifications. This can be submitted to your chosen insurer to assist with arranging cover for your piece.
Your jewellery is also independently submitted to the International Gemological Institute for assessment once completed. The accompanying report records the characteristics of the diamonds and details of the finished piece, providing independent documentation of your jewellery’s quality.
These documents serve different purposes: our replacement value estimate indicates the estimated cost of replacing your piece, while the independent grading report documents its gemmological characteristics.
Our Unwavering Commitment to You
A dedication to exceptional craftsmanship, meticulously selected stones, and a discreet, highly personalised experience — from initial consultation to final delivery and beyond.
This is our promise to you.
20% OFF - APPLIED AT CHECKOUT
The Melissa Lab Diamond Tennis Bracelet features approximately 3ct. of certified lab-grown diamonds, individually set in solid gold or platinum for a beautifully refined finish.
✓ Lifetime Warranty on All Lab & Natural Diamond Jewellery
✓ Independently Certified by IGI & GIA
✓ Direct-to-Client Pricing
✓ Complimentary Insured Express Shipping
✓ Luxury Gift Wrapping on All Orders
Finer Details:
Lead Time
Each piece is individually made to order. Please allow 4 weeks for our master jewellers to handcraft to perfection
Diamonds
• 0.05ct. (approx. 2.5mm) round brilliant lab-grown diamonds
• Total carat weight: 3ct.
Metal
• 9K Solid Gold (White, Yellow, Rose)
• 14K Solid Gold (White, Yellow, Rose)
• 18K Solid Gold (White, Yellow, Rose)
• Platinum
Certification
The completed piece is sent to the IGI laboratory for independent assessment and certification
Diamond Specifications
• Cut: Excellent
• Colour: D–E
• Clarity: VVS–VS
• Certification: IGI
Sizing
• 15 cm (XS)
• 16 cm (S)
• 17 cm (M) – Our most popular size
• 18 cm (L)
• 19 cm (XL)
Measure your wrist, then add 1–1.5 cm for the ideal fit. If you are between sizes, choose the next size up
Size Guide
Setting
• Each stone is meticulously hand set in a classic four-claw setting
• Secured with a box clasp and double safety latch
Shipping
Care Guide
Learn how to choose the best lab diamond tennis bracelet in Australia