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.

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 4–7 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.

Yes. At Harper Jewellery Diamonds, we go beyond conventional certification practices by arranging independent assessment of our completed diamond jewellery by the International Gemological Institute (IGI).

Rather than certifying only individual diamonds, we submit the entire finished piece for independent verification of its diamond specifications and quality.

This additional level of assurance reflects our commitment to transparency, exceptional craftsmanship and complete confidence in every piece we create.

We offer a flexible 30-day return and exchange policy on eligible ready-to-wear jewellery, provided pieces are unworn and returned in their original condition and packaging.

Approved returns are issued as a store credit with no expiry date, allowing you the freedom to select something you truly love, whenever the time is right.

To arrange a return, simply email customercare@harperjewellery.com.au and our team will be delighted to assist.

Custom, bespoke and made-to-order pieces are considered final sale for change of mind. Your rights under Australian Consumer Law remain unaffected.

Please refer to our full Returns Policy for further details.

Absolutely. Our Mosman showroom is available by appointment only for private viewings. Please contact us at customercare@harperjewellery.com.au.