TNK Jewellery is recognised for its commitment to creating elegant and sophisticated pieces that cater to diverse tastes and preferences. The world's most elite and inclusive opal experience, ...

With the largest, best-quality Australian opals worth more than £600,000 thanks to soaring demand from jewellers around the world, there is a vast amount of money to be - potentially - made.

A ring with an 8.80ct black Australian opal, courtesy of Kreis jewellery. GemGenève exhibitions are a must-see each edition and this one was one of the most spectacular. Curated by Gemgenève ...