一件极佳且极亮的 willemite（troostite），在方解石中，伴生 franklinite。 螢光 - 高度: 10 cm - 闊度: 9 cm- 791 g

一块优秀、体积大且极其明亮的 Willemite (troostite) embedded in calcite with franklinite 来自 Sterling hill mine, Ogdensburg, USA。
This is a fantastic piece that will be a true eye catcher in a a uv display because of its colors and proportions.
Photos taken under shortwave uv, also nice respons under longwave uv.