梅雷拉尼丘陵
Manyara, Tanzania
坦尚尼亚的梅雷拉尼丘陵是世界上唯一具规模的坦桑石产地——黝帘石的蓝紫色宝石变种——同时出产优质的绿色沙弗莱石榴石。
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.