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 of the highest calibre. By operating without traditional retail layers, we are able to offer remarkable quality, precision craftsmanship, and refined design — all with transparency and intention.

Every Harper piece is meticulously crafted to endure, designed to be worn effortlessly and treasured for a lifetime. From rare natural diamonds to expertly cut lab-grown stones and fine moissanite, each creation is selected and shaped with an unwavering focus on beauty, balance, and brilliance.

From our first conversation to final delivery, you are guided through a discreet, bespoke experience where your vision is translated seamlessly into a piece of true significance.

Luxury, without excess. Craftsmanship, without compromise.
This is the Harper difference.

Australia

We are delighted to offer complimentary Australia Post Express Shipping on all Australian orders.

Please allow 1–3 business days for express delivery once your order has been dispatched.

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

New Zealand

We are delighted to offer complimentary Australia Post International Express Shipping on all New Zealand orders over AUD $500. Orders under AUD $500 incur a flat shipping fee of AUD $40.

Please allow 1–3 business days for express delivery once your order has been dispatched.

All parcels include 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.

Rather than providing our own valuation certificates, every bespoke lab-grown and natural diamond piece is independently submitted to the International Gemological Institute (IGI) for assessment once completed.

Your IGI report provides an independent record of your diamond's characteristics and authenticity, offering an internationally recognised level of confidence.

At Harper Jewellery Diamonds, we believe in transparent, direct-to-client pricing. Our pieces are priced according to the quality of the diamonds, precious metals, and craftsmanship, rather than to achieve a predetermined valuation figure.

If you require a replacement valuation for insurance purposes, we recommend obtaining one through an independent registered jewellery valuer. This ensures an unbiased assessment based on current market replacement costs, as insurance valuations often differ from the original purchase price.