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Chrome Tourmaline

only found in east africa
 
colors available:   medium green
deep forest green

grass green
yellow-green
mint green
family/species:   tourmaline, dravite
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:   none
important information:  

distinctively colored by chromium and vanadium to give a beautiful range of green hues
100% natural with no known treatments or enhancements

(see policy on Treatment Disclosure)

birthstone:  

october

anniversary:  

8th

cuts:   calibrated up to 6mm
all standard cuts
and free size
rough:   generally available in clean material to cut sizes 4mm and under; bigger pieces occasionally available - please Contact Us for current stock
mining:   found only in in tanzania (landanai, morogoro, umba valley) and kenya (taita-taveta)

Photo Gallery: Selected Chrome Tourmalines

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