Tanzanites are rare and incredibly beautiful gemstones that are only mined in one region of the world, Tanzania. Their distinct, vibrant blue-violet colour makes them highly prized in the world of jewellery. Tanzanites were first discovered in 1967, and since then they have grown in popularity because of their rarity and unique beauty. Their value is also enhanced by the fact that they are extremely difficult to find and extract, making them unique and coveted pieces on the gemstone market.