A brilliantly lustrous cluster of jackstraw, lustrous, bluish-dark green, vivianite crystals, to 1.25 cm in length, perched atop of a limonite stained matrix. This is one of the choicest, richest miniatures I have seen from the locale and is a superb display quality. A significant Florida and US vivianite. These were mined in the mid-1980s by the mine geologist and kept in his collection until we bought the lot, last year.