The Antwerp World Diamond Centre (AWDC) has completed a marketing campaign that features a gumball machine filled with lab-created diamonds that can be won for €5 ($AUD8.90).

A platinum and diamond pocket watch owned by legendary criminal mastermind Al Capone has impressed collectors at auction in New York.

The deadline is approaching to enter the 2025 Australian Opal Awards, an event which recognises excellence in jewellery manufacturing and carving.

A class action has been filed against jewellery chain Helzberg Diamonds, alleging that the company’s website inaccurately claims products are being offered at discounted prices for a limited time.

An Australian jewellery retailer once popular with so-called Hollywood stars and local trend-setters is in hot water after a flood of consumer complaints.