Diamond Key Necklace

At Ernesto Buono Jewellery, we appreciate your purchase. To help you get the most out of your design, we extend your experience with a complimentary lifetime cleaning service.

When you visit one of our stores through the years, we can provide your beloved Ernesto Buono jewellery with a professional clean to help you get the most out of your piece.

When shopping with Ernesto Buono Jewellery, we only offer the best for our customers, including the quality of materials. We sell both natural and lab-grown diamond jewellery. For the majority of our jewellery, including our engagement rings, we rely on GIA or IGI graded diamonds. We will always clearly state otherwise if we are using anything else.

This doesn’t only guarantee the quality but also the authenticity of the sourced stones. For proof of purchase, our engagement rings come with the relevant certificates.

All purchases come with complimentary free shipping on orders Australia-wide. Our shipping is secure and insured. We ship items within 2-4 business days depending on stock availability.

All Made-to-Order products will be shipped anywhere from 14-25 days from your order being placed.

Read our full Shipping & Delivery Policy

We only use secure payment processes so you can shop with peace of mind. We also have finance options available through Zip Pay.

Ernesto Buono Jewellery is proud to offer the expertise of our in-house master jewellers.

We will exchange or give your money back with our free 30-day exchange*. We also offer free resizing if required, however, the responsibility of postage associated with resizing lies with the customer.

All items listed on our website are available in standard sizes and diamond specifications. However, should you require a particular size, metal or diamond specification not available, we offer the option to customise and create the item to your requirements.

*In instances where the item specified is unavailable and customisation is required, kindly note that crafting these items to order requires additional time. It’s important to also note that all custom orders are non-refundable due to their personalised nature. We are unable to accept returns or issue refunds on custom-made-to-order items.

Read our full Returns & Refund policy