Tourmaline

Tourmaline is found in almost every color and is known by different names depending on the chemical structure. Tourmaline is in the silicate mineral group as a boron silicate in which boron is compounded with elements such as aluminum iron, magnesium, sodium, lithium, or potassium in a common crystal structure yielding crystals with similar physical characteristics but very different chemical compositions. 

Tourmaline is a 7-7.5 on the mohs scale and is one of the birthstones for October. Tourmaline is a durable gemstone and suitable for rinds as well as bracelets and pendants. 

Tourmaline becomes electrically charged when heated and when squeezed. It’s piezoelectric as well.

Types of Tourmaline:

Elbite: Pink/Green Bicolor or Green

Indicolite: Blue

Rubellite: Red or Pink

Schoral: Black

 

The Long List: 

Adachiite CaFe3Al6(Si5AlO18)(BO3)3(OH)3OH
Bosiite NaFe3(Al4Mg2)Si6O18(BO3)3(OH)3O
Chromium-dravite NaMg3Cr6Si6O18(BO3)3(OH)3OH
Chromo-alumino-povondraite NaCr3(Al4Mg2)Si6O18(BO3)3(OH)3O
Darrellhenryite NaLiAl2Al6Si6O18(BO3)3(OH)3O
Dravite NaMg3Al6Si6O18(BO3)3(OH)3OH
Elbaite Na2(Li3,Al3)Al12Si12O36(BO3)6(OH)6(OH)2
Feruvite CaFe3(MgAl5)Si6O18(BO3)3(OH)3OH
Fluor-buergerite NaFe3Al6Si6O18(BO3)3O3F
Fluor-dravite NaMg3Al6Si6O18(BO3)3(OH)3F
Fluor-elbaite Na2(Li3,Al3)Al12Si12O36(BO3)6(OH)6F2
Fluor-liddicoatite Ca(Li2Al)Al6Si6O18(BO3)3(OH)3F
Fluor-schorl NaFe3Al6Si6O18(BO3)3(OH)3F
Fluor-tsilaisite NaMn3Al6Si6O18(BO3)3(OH)3F
Fluor-uvite CaMg3(Al5Mg)Si6O18(BO3)3(OH)3F
Foitite [](Fe2Al)Al6Si6O18(BO3)3(OH)3OH
Lucchesiite Ca(Fe)3Al6Si6O18(BO3)3(OH)3O
Luinaite-(OH) (Na,[])(Fe,Mg)3Al6Si6O18(BO3)3(OH)3OH
Magnesio-foitite [](Mg2Al)Al6Si6O18(BO3)3(OH)3OH
Maruyamaite K(MgAl2)(Al5Mg)Si6O18(BO3)3(OH)3O
Olenite NaAl3Al6Si6O18(BO3)3O3OH
Oxy-chromium-dravite NaCr3(Mg2Cr4)Si6O18(BO3)3(OH)3O
Oxy-dravite Na(Al2Mg)(Al5Mg)Si6O18(BO3)3(OH)3O
Oxy-schorl Na(Fe2Al)Al6Si6O18(BO3)3(OH)3O
Oxy-vanadium-dravite NaV3(V4Mg2)Si6O18(BO3)3(OH)3O
Povondraite NaFe3(Fe4Mg2)Si6O18(BO3)3(OH)3O
Rossmanite [](LiAl2)Al6Si6O18(BO3)3(OH)3OH
Schorl NaFe3Al6Si6O18(BO3)3(OH)3OH
Tsilaisite NaMn3Al6Si6O18(BO3)3(OH)3OH
Uvite CaMg3(Al5Mg)Si6O18(BO3)3(OH)3OH
Vanadio-oxy-chromium-dravite NaV3(Cr4Mg2)Si6O18(BO3)3(OH)3O
Vanadio-oxy-dravite NaV3(Al4Mg2)Si6O18(BO3)3(OH)3O