No reserve price Orange, Brown, Green Sphalerite - 19.81 ct - Instituto Gemólogico Español (IGE)

Sphalerite is a fascinating mineral well known for its striking luster and range of colors, including orange, brown, and green as seen in some specimens. It is the main ore of zinc and has a complex chemical composition involving zinc and sulfur. Sphalerite crystals can exhibit high dispersion, sometimes exceeding that of diamonds, lending a fiery sparkle to well-cut gemstones from this mineral. While usually an ore mineral, transparent sphalerite crystals have become valuable to collectors and sometimes cut as gemstones. Their vibrant hues and brilliance make them an interesting choice among colored minerals with a natural appeal.