10% off jewellery

Offering a stunning collection of Australian Opals, South Sea pearls and Argyle Diamonds, including the rare pink diamond and the popular champagne diamond in the CBD. WA Seniors Card members receive 10% off purchases.

Terms & Conditions

Please show our staff your WA Seniors Card before purchase to receive this offer.


Items that are already reduced.

About Costello's Jewellery

Costello’s is a West Australian family-owned and operated jewellery company that has specialised in Australia’s unique gems for three generations.

Costello’s offers an exclusive range of high quality jewellery products featuring Australian Opals, South Sea Pearls and Argyle Diamonds.

A full selection of loose stones are also available that can be handmade into jewellery within days.

A winner of numerous Western Australian Tourism Awards for excellence in tourism retailing, Costello’s quality products are backed by an equally high standard of customer service and an international guarantee of authenticity.

What are the benefits of the WA Seniors Card?

Free off-peak travel

Members get free off-peak travel and concession rates at all other times on Transperth. Conditions apply.
Learn more

Local government rate rebate

Get a State Government rebate on local government rates. Conditions apply.
Learn more

Water rate rebate

Get a State Government rebate on water service charges. Conditions apply.
Learn more

Special offers

Members have exclusive access to special offers provided by our business partners.
View all special offers


Members have access to discounts from more than 600 businesses - search discounts near you.
View all discounts


Members can enter monthly competitions provided by our business partners.
View all competitions

View all the benefits.