梅雷拉尼丘陵
Manyara, Tanzania
坦尚尼亞的梅雷拉尼丘陵是世界上唯一具規模的坦桑石產地——黝簾石的藍紫色寶石變種——同時出產優質的綠色沙弗萊石榴石。
What it is known for
Merelani's graphitic gneisses host gem tanzanite (blue zoisite), tsavorite (green grossular garnet), and well-formed crystals of both, often on matrix.
What collectors look for
Gem tanzanite crystals and tsavorite — especially well-terminated, richly coloured examples on matrix — are the most sought-after.