Top 10 Varieties Of the Gemstone Tourmaline

Metal_Treasure
Tourmaline is most commonly black but it can occur in almost all colors and even in bi-colored or multi-colored crystals. That's a very interesting gem.
Tourmaline's hardness on Mohs scale is 7-7.5 /10 (not the best but still good).

The Top Ten

1 Paraiba Tourmaline Paraiba Tourmaline

It's a very rare neon-bright blue gem. Paraiba tourmaline was named for the Brazilian state of Paraiba where it was discovered. - Metal_Treasure

2 Elbaite Elbaite

Its crystals may be green at one end and pink at the other, and even with other colors between these two. - Metal_Treasure

3 Indicolite (Indicolite Tourmaline) Indicolite (Indicolite Tourmaline)

Its name comes from the word 'indigo' - Metal_Treasure

4 Green Tourmaline (Verdelite) Green Tourmaline (Verdelite)
5 Red Tourmaline (Rubellite) Red Tourmaline (Rubellite)

Its name (Rubellite) comes from ruby - because it's red like ruby - Metal_Treasure

6 Watermelon Tourmaline Watermelon Tourmaline

That's one of the most interesting crystals - green on the outside and pink inside - Metal_Treasure

7 Brown Tourmaline (Dravite)

It's dark yellow to brownish black - Metal_Treasure

8 Colorless Tourmaline (Achroite, Achroite Tourmaline) Colorless Tourmaline (Achroite, Achroite Tourmaline)
9 Iron Tourmaline (Schorl, Black Tourmaline)

It's black and is the most common variety of tourmaline that may account for 95% or more of all tourmaline in nature. - Metal_Treasure

10 Uvite

It is an uncommon form of Tourmaline that forms different crystal formations than the most of the other Tourmalines. Its name comes from Uva Province, Sri Lanka, where it was first identified. - Metal_Treasure

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