Modern , list nephrite in nephrite between mineralogy and malachite study after the category in the world , some of gentle jade serpentine jade and poor fossil pre - pressing zoisite , similar china only mountain jade bao , called the nephrite too , obviously mix the non - real jade as the real jade 在现代，国际上把和田玉列入软玉矿物学和玉石学范畴后，有的把鲍文玉蛇纹石玉和糟化石致密黝帘石，相似中国独山玉，也称为软玉，显然把非真玉混为真玉了。
And it was in fact the firm of tiffanys that introduced the stone to the public in a spectacular promotional campaign two years after it had been discovered . spectacular and magnificent is the deep blue of tanzanite , ranging from ultramarine to a light purplish blue . the most coveted colour is a blue which shows a purplish hue shimmering around it , which is extremely spectacular in sizes above ten carats 1967年，英国成立了泰芬尼宝石公司，该公司注意到坦桑尼亚的蓝色黝帘石是可以开发的宝石资源，随刻意开采，并融入先进的宝石加工工艺，他们把琢磨出的蓝色宝石取名为“坦桑石” ，推荐到世界宝石市场，立刻身价倍增，供不应求，丑小鸭变成金凤凰，现已成为世界流行的一种饰用宝石。
