San Pedro variscite is a highly prized, natural, green gemstone variety of the mineral variscite mined in Nevada, USA. Known for its remarkable hardness (4.5–5 on the Mohs scale), which makes it suitable for jewelry, the stone often features a distinctive, tight black spiderweb matrix.

Its coloration ranges from a deep emerald or forest green to lighter lime green hues, a result of trace chromium or vanadium rather than copper, which chemically differentiates it from turquoise. This specific material is noted for taking an excellent, high polish.