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Home / Gem Library / Gemstones Varieties / Chrome Tourmaline November 22, 2017

Natural Chrome Tourmaline

Chrome Tourmaline from East Africa is a very attractive shade of green which derives it's unique coloration from the presence of chromium or vanadium.


  • There are 237 Chrome Tourmaline gemstones available at Multicolour.com
  • Chrome Tourmaline(s) are organized in the following categories: CalibratedMixed LotPairSingle,  gemstones.
  • Our most expensive Chrome Tourmaline is USD 4735.80 and largest Chrome Tourmaline weight is CTS 20.06.
  • Our cheapest Chrome Tourmaline is USD 0.59 and smallest Chrome Tourmaline weight is CTS 0.00.

Find your Chrome Tourmaline

Our Chrome Tourmaline(s) are available in various shapes, sizes and colors. 237 Chrome Tourmaline(s), too many to look through? You may select any combination of search options. Colors grade into each other and you can search for more than one color at once. For a better selection, try selecting two or three colors, -- your first choice plus the two closest colors.

Shape Length (mm) Width (mm)
Category Weight (cts) Price (USD)
Color range
strongly yellowish green
slightly yellowish green
yellowish green
green





Chrome Tourmaline Profile

Color information: dark green, light green, yellowish green
Refractive Index: 1.624(+.005, -.005) - 1.644(+.006, -.006)
Chemical Composition: (NaCa)(LI,MgFe,Al)9B3Si6(O,OH)31
Hardness: 7-7.5
Density: 3.06 (.05, +.15)
Crystal Group: Hexagonal
Ocurrence: East Africa
Sign of the Zodiac: N/A
Month of the year: N/A
Chrome Tourmaline Chrome Tourmaline
Tourmaline is a gemstone noted for the large number of colors in which it occurs. Since chrome tourmaline is much more rare and valuable than ordinary green tourmaline, chemical analysis has become an increasingly important part of accessing tourmaline value. In the field, the chrome deposits normally produce similar material so if one stone tests as chrome, we can assume that all the tourmaline from that deposit should also be chrome bearing.

The easiest way to determine the presence of chromium or vanadium is by use of the Chelsea or Chrome filter. The dark colored filter will appear red upon inspection of a transparent illuminated chrome or vanadium bearing material.

A desktop spectrascope may not readily reveal any chromium content because the chrome tourmaline spectrum is a combination of chrome and vanadium and we do not see the distinct chromium lines like we see in ruby, emerald, and alexandrite.

For a more detailed analysis of gemstone chemistry (chrome or vanadium content), well equipped labs use, EDXRF; (Energy dispersive X-ray fluorescence).

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Chrome Tourmaline range/
Chrome Tourmaline Single
Chrome Tourmaline Single Cushion Eye clean
Size: 17.30 X 10.00 MM
Weight: 8.770 CTS
Shape: Cushion
Clarity: Eye clean
Usually ships within 24 hours
RECOMMENDED
OUR PRICE
USD 4735.80
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Chrome Tourmaline Calibrated
Chrome Tourmaline Calibrated Round Eyeclean to Moderately included
Size: 1.30 X 1.30 MM
Weight: 0.008 CTS
Shape: Round
Clarity: Eyeclean to Moderately included
Usually ships within 24 hours
RECOMMENDED
OUR PRICE
USD 0.59
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