1974-1975期间,巴西的米纳斯吉拉斯州东北部的一个小伟晶岩地区,开始生产异常精美的电气石、黄玉和伴生矿物标本。首次见到在叶钠长石和锂云母上长有宝石级兰色黄玉和光彩夺目的锂电气石晶体。接着找到了美丽的紫色羟磷铍硅石和巨大的浅绿色磷灰石晶体。现今全世界许多重要收藏单位和博物馆都以拥有这些标本而感到自豪。 During 1974-1975, a small pegmatite area in northeastern Minas Gerais, Brazil, began producing exceptionally fine tourmaline, topaz and accompanying mineral specimens. For the first time in the leaf albite and lithium mica on the long gem-level blue topaz and dazzling lithium tourmaline crystals. Then found the beautiful purple hydroxyphosphates and huge light green apatite crystals. Many of today’s major collection units and museums around the world are proud to own these specimens.