Analytical market data of rough Tourmaline price per carat USD. How do we calculate this data? CLICK HERE

MINERALSIZEGRADECURRENTCHANGEYEAR HIGHYEAR LOWAVAILABILITY
Tourmaline5-15 ct70-90$7.96+$0.01$7.97$7.78High
Current and historical Tourmaline market price index:
Current price per carat by date 2016-2017.
Rough average pricing scale.

Price per carat by year end.
Physical Properties of Tourmaline:
Chemical:A(D3)G6(T6O18)(BO3)3X3Z - The simple chemical formula, which covers the main forms of Tourmaline (Elbaite, Schorl, and Dravite)
Cleavage:Uneven, small conchoidal, brittle
Fracture:Conchoidal to uneven
Color:Most commonly black, but can range from colorless, brown, violet, yellow, orange, blue, red, green, pink, or bi-colored, or even tri-colored.
Crystal System:Hexagonal
Specific Gravity:3.03 - 3.25
Hardness:7 - 7.50
Tenacity:Brittle
Luster:Vitreous
Refractive Index:1.635 – 1.675
Transparency:Transparent to Opaque

LOCATION
United States, Canada, Sri Lanka, Brazil, Tanzania, Nigeria, Kenya, Madagascar, Mozambique, Namibia, Afghanistan, Pakistan, and Malawi

GEMOLOGY
Tourmaline gemstone is a semi-precious mineral stone well known for its incredible ability to aid in the detoxification process of the human body. It is one of only a handful of minerals that have the ability to emit negative ions and far-infrared rays. The name Tourmaline comes from the Sinhalese (Sri Lanka) word tura mali which translates as the stone of mixed colors. Tourmaline of all colors are faceted into gems for jewelry, but the red, green, blue, and multicolored stones, especially watermelon, are the most popular. Tourmaline can be found in fairly large transparent crystals, and these can produce very large exquisite and flawless gemstones.

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