Editing Garnet (section)

{{short description|Mineral, semi-precious stone}}
{{Other uses}}
{{shortlead|date=January 2024}}
{{Infobox mineral
| name        = Garnet
| category    = [[Nesosilicate]]
| boxwidth    = 
| boxbgcolor  = #733635
| boxtextcolor = white
| image       = Garnet Andradite20.jpg
| alt         = 
| caption     = 
| formula     =  The general formula <!--
                -->''X''<sub>3</sub>''Y''<sub>2</sub>(SiO<sub>4</sub>)<sub>3</sub>
| IMAsymbol   = Grt<ref>{{Cite journal|last=Warr|first=L. N.|date=2021|title=IMA–CNMNC approved mineral symbols|journal=Mineralogical Magazine|volume=85|issue=3|pages=291–320|doi=10.1180/mgm.2021.43|bibcode=2021MinM...85..291W|s2cid=235729616|doi-access=free}}</ref>
| molweight   = 
| symmetry = Ia3d
| class = <math>4/m\bar{3} 2/m</math>
| color       = virtually all colors, blue is rare 
| habit       = [[Rhombic dodecahedron]] or cubic
| system      = [[Cubic (crystal 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<ref name="GRG"/>
| refractive  = 1.72–1.94
| opticalprop = Single refractive, often anomalous double refractive<ref name="GRG"/>
| birefringence = None
| pleochroism = None
| streak      = White
| gravity     = 3.1–4.3
| melt        = 
| fusibility  = 
| diagnostic  = 
| solubility  = 
| fluorescence= variable
| other       = variable magnetic attraction
| var1 = Pyrope       | var1text = Mg<sub>3</sub>Al<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>
| var2 = Almandine    | var2text = Fe<sub>3</sub>Al<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>
| var3 = Spessartine  | var3text = Mn<sub>3</sub>Al<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>
| var4 = Andradite    | var4text = Ca<sub>3</sub>Fe<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>
| var5 = Grossular    | var5text = Ca<sub>3</sub>Al<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>
| var6 = Uvarovite    | var6text = Ca<sub>3</sub>Cr<sub>2</sub>Si<sub>3</sub>O<sub>12</sub>
}}

'''Garnets''' ({{IPAc-en|pron|ˈ|ɡ|ɑr|n|ᵻ|t}}) are a group of [[silicate mineral]]s that have been used since the [[Bronze Age]] as [[gemstone]]s and [[abrasive]]s.

Garnet minerals, while sharing similar physical and crystallographic properties, exhibit a wide range of chemical compositions, defining distinct species. These species fall into two primary solid solution series: the pyralspite series ([[pyrope]], [[almandine]], [[spessartine]]), with the general formula [Mg,Fe,Mn]<sub>3</sub>Al<sub>2</sub>(SiO<sub>4</sub>)<sub>3</sub>; and the ugrandite series ([[uvarovite]], [[grossular]], [[andradite]]), with the general formula Ca<sub>3</sub>[Cr,Al,Fe]<sub>2</sub>(SiO<sub>4</sub>)<sub>3</sub>. Notable varieties of grossular include [[Grossular#Hessonite|hessonite]] and [[tsavorite]].