Tanzanite remains one of the world's rarest gemstones, found exclusively in a small area near Arusha, Tanzania. This geological exclusivity creates a unique market dynamic where supply is inherently limited and cannot be replenished from new sources.
Mining depth continues to increase at the Merelani Hills, with some operations now exceeding 1,000 metres below surface. As mining becomes deeper and more expensive, the cost basis for tanzanite production rises, supporting long-term price appreciation for quality stones.
Collector and investor interest in tanzanite has grown significantly, with fine-quality stones above 10 carats commanding premium prices at international auctions. The combination of rarity, beauty and geographic exclusivity makes tanzanite a compelling addition to gemstone portfolios.
For jewellery manufacturers and retailers, direct sourcing from Tanzania provides access to premium stones at source pricing. Establishing relationships with vetted mining partners ensures consistent supply of calibrated and bespoke tanzanite for production and luxury collections.