peridot

{{Infobox mineral | name = Peridot | category = Silicate minerals | boxwidth = | boxbgcolor = #acdf7d | image = Forsterite-Olivine-tmu14a.jpg | image size = | caption = | formula = | molweight = | color = Yellow, to yellow-green, olive-green, to brownish, sometimes a lime green, to emerald hue | habit = | system = Orthorhombic | twinning = Uncommon, simple twinning can occur on {100}, {011},{012}, cyclic twinning on {031} | cleavage = Poor on {010} and {110}, {010} cleavage improves with increasing iron content | fracture = Conchoidal | mohs = 6.5–7 | luster = Vitreous to oily | refractive = 1.64–1.70 | opticalprop = | birefringence = +0.036 | pleochroism = Weak pale yellow-green to yellow, yellow to yellow orange | streak = Colorless | gravity = 3.2–4.3 | melt = between 1,200 and 1,900°C | fusibility = Infusible avoid thermal shock | diagnostic = | solubility = Slowly forms gelatinous silica in | diaphaneity = Translucent to transparent | other = }}

Peridot ( ), sometimes called chrysolite, is a yellow-green transparent variety of olivine. Peridot is one of the few gemstones that occur in only one color.