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.

Lab-grown diamonds represent the future of fine jewellery - combining timeless beauty with modern innovation. Ethically created using advanced technology, they possess the same brilliance, hardness, and chemical composition as mined diamonds, yet come without the environmental impact or inflated price tags. Choosing a lab diamond means embracing conscious luxury - a smarter, more transparent way to own an authentic diamond that reflects not only your style but your values. At Harper Jewellery, we believe the future of elegance is ethical, sustainable, and unmistakably brilliant.

Moissanite is a brilliant, lab-created gemstone often chosen as an alternative to diamonds. Visually stunning and nearly as hard as a diamond on the Mohs scale, it offers exceptional sparkle and fire at a fraction of the price. Ethically made and incredibly durable, moissanite is the perfect choice for those seeking timeless beauty without the diamond price tag.

White gold vermeil (pronounced ver-may) is a premium type of gold plating. It features a thick layer of 18K white gold - at least 2.5 microns thick - expertly bonded over solid sterling silver. This creates a luxurious finish that looks and feels like solid gold, but at a more accessible price point. Unlike standard gold plating, vermeil is more durable and made with only precious metals, making it ideal for fine jewellery lovers seeking both beauty and value.