At Harper Jewellery, we do things differently. We believe luxury should feel personal, not overpriced.

As your dedicated Lab Diamond Concierge, we work directly with leading master jewellers and certified suppliers - no middlemen, no retail markups. This direct relationship means you receive exceptional quality lab-grown diamonds and moissanite jewellery at Australia’s most competitive prices, without ever compromising on craftsmanship.

Every Harper piece is an investment in enduring beauty - meticulously crafted, ethically sourced, and designed to last a lifetime. From your first consultation to final delivery, we offer a private, bespoke experience where your vision comes to life seamlessly, guided by expertise and genuine care.

Luxury made personal. Value made real. That is the Harper difference.

We offer complimentary Australia Post Express Shipping on all orders.
Please allow 1–3 business days for express delivery after your order has been dispatched.

All parcels are shipped with full tracking and require a signature upon delivery for your peace of mind.

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.

Absolutely. Our Mosman showroom is available by appointment only for private viewings.

At Harper Jewellery, we take immense pride in the craftsmanship and quality of our pieces. As a testament to our commitment, we offer a lifetime workmanship warranty, covering any manufacturing defects in materials or craftsmanship.

If you believe your piece exhibits a manufacturing fault, you may return it to us for an inspection. Should we determine that the issue arises from a defect in workmanship, we will, at our discretion, repair or replace the item at no cost. Please note that repairs typically require 4–6 weeks to complete. This warranty extends to custom-made bespoke pieces as well.

Please see our warranty page for more information.