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At the GemGenève May 2025 edition, colour took centre stage. In a spirited conversation moderated by jewellery journalist and content creator Katerina Perez, three experts — Carl-Philip Arnoldi, the future successor of the German cutting house HC Arnoldi, Constantin Wild, president of Constantin Wild GmbH & Co.KG, and David Nassi, third-generation gem merchant and lapidary artist from New York — explored the growing fascination with rare coloured gemstones. Their dialogue dismantled outdated definitions, charted shifts in taste and value, and celebrated the rediscovery of treasures once dismissed as “semi-precious.”