I remember that these were some of the first Sphalerites to come out of China about 10 years ago, and the color is amazing. This specimen feature a few sharp, lustrous, gemmy, RICH red-orange color modified crystals of Sphalerite on sulfide matrix. When these crystals are backlit, the color they exhibit is gorgeous, and truly doesn't look quite like any other mine in the world. There aren't many localities producing gem quality Sphalerite these days, and these specimens from Shizhuyuan are becoming more and more difficult to find.