Green-Yellow, Orange, Brown Tourmaline

A fine palette of Earth tones..

Green-Yellow, Orange and Brown Tourmalines are Dravites that are primarily found in the rich gem deposits of East Africa.

They are colored by the trace elements vanadium and chromium and many will display a pink to pinkish-red color under the Chelsea filter!

Occasionally, Elbaites are found in these colors too.

The tourmaline family is found in many different locations around the world including Brazil, Nigeria, Mozambique, USA (California, Maine), Congo, Tanzania, and has one of the widest color ranges found in gemstones.

Since tourmaline grows in long crystals referred to as “pencils” they are frequently cut as elongated emerald cuts that are perfect for pendants, earrings and even some rings.

Tourmaline is one of the birthstones for October and celebrates the 8th Anniversary.

Lots of choice in colors for October birthdays!

We have many more shapes and sizes available in Green-Yellow, Orange and Brown Tourmaline – please contact us if you don’t find what you are looking for in our online inventory.

click here to see a selection of Green-Yellow, Orange, Brown Tourmaline for sale

Colors

green

green-yellow

olive

brownish-green

yellow

yellow-orange

brownish-yellow

orange

brownish-orange

brown

orangey-brown

Family/Species

Tourmaline, Dravite and Tourmaline, Elbaite

Properties

RI = 1.624 (+/-0.005) – 1.644 (+/-0.006) DR

SG = 3.06 (-0.05, +0.15)

Dispersion = 0.017

Hardness = 7-7.5

suitable for use in jewelry

Pyroelectric – becomes electrically charged when heated
Piezoelectric – becomes electrically charged when squeezed
Many modern higher-end hair dryer use Tourmalines in them to prevent static!

Treatments

Usually none

Chrome/vanadium bearing Dravite gems in green-yellow-orange and brown colors are almost always Natural, untretaed.

Elbaite gems can be 100% natural with no treatments or enhancements, or heated, or irradiated and heated 

see policy on Treatment Disclosure

Important information

Dravite gems are colored by chromium and vanadium;
Elbaite gems are usually colored by Manganese, but also by color centers within the crystal structure

Birthstone

October

Anniversary

8th

Cuts

Calibrated sizes up to 5mm

All standard cuts and free sizes

Mining locations

Chrome/Vanadium bearing Dravite is found only in Tanzania (Landanai, Morogoro, Umba Valley) and Kenya (Taita-Taveta)

Elbaite is found in Brazil, Nigeria, Mozambique, Zambia, Afghanistan, USA, and other localities worldwide

 

Lost your password? Please enter your username or email address. You will receive a link to create a new password via email.
We do not share your personal details with anyone.