Grey Tourmaline

                                                                                                                                                                             A rare color in Tourmaline

GreyTourmaline_eme_cut_14.7x8.8mm_7.31cts_N_tm487

Grey is a rare color for Tourmaline and only a very limited number of gems in this color are found each year.

Shades can range from a light silvery-grey, greenish-grey, bluish-grey, pinkish-grey or brownish-grey and can be anywhere from light to medium to dark in tone.

Tourmalines are part of a family of closely related mineral species with the same crystal structure but with different chemical and physical properties. Most Grey Tourmalines are from the Elbaite variety.

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.

Tourmalines are 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.

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

Lots of choice in colors for October birthdays!

We have a few shades, shapes and sizes available in Grey 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 Grey Tourmaline for sale

 

Colors

light grey

silvery-grey

greenish-grey

bluish-grey

pinkish-grey

brownish-grey

medium grey

dark grey

Family/Species

Tourmaline, usually 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

Natural, Heated

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

see policy on Treatment Disclosure

Important information

A rare color in Tourmaline

Birthstone

 October

Anniversary

8th

Cuts

Free sizes

Mining locations

Brazil, Nigeria, Mozambique, Zambia, Afghanistan, USA, and other localities worldwide