garnet group

{{Infobox mineral | name = Garnet | category = Nesosilicate | boxwidth = | boxbgcolor = #733635 | boxtextcolor = white | image = Garnet Andradite20.jpg | alt = | caption = | formula = The general formula X3Y2(SiO4)3 | IMAsymbol = Grt | molweight = | symmetry = Ia3d | class = 4/m\bar{3} 2/m | color = virtually all colors, blue is rare | habit = Rhombic dodecahedron or cubic | system = Isometric | twinning = | cleavage = Indistinct | fracture = conchoidal to uneven | mohs = 6.5–7.5 | luster = vitreous to resinous | diaphaneity = Can form with any diaphaneity, translucent is common | polish = vitreous to subadamantine | refractive = 1.72–1.94 | opticalprop = Single refractive, often anomalous double refractive | birefringence = None | pleochroism = None | streak = White | gravity = 3.1–4.3 | melt = | fusibility = | diagnostic = | solubility = | fluorescence= variable | other = variable magnetic attraction | var1 = Pyrope | var1text = Mg3Al2Si3O12 | var2 = Almandine | var2text = Fe3Al2Si3O12 | var3 = Spessartine | var3text = Mn3Al2Si3O12 | var4 = Andradite | var4text = Ca3Fe2Si3O12 | var5 = Grossular | var5text = Ca3Al2Si3O12 | var6 = Uvarovite | var6text = Ca3Cr2Si3O12 }}

Garnets () are a group of silicate minerals that have been used since the Bronze Age as gemstones and abrasives.