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grey
amethyst  



said to prevent drunkenness...

colors available
purple
violet-purple
reddish-purple
family/species:

quartz
properties:

RI=1.544 and 1.553 DR
SG=2.66 (+/-0.01)
dispersion=0.013
hardness=7
note: suitable for use in jewelry

treatments:

none
important information

a natural quartz which is not usually treated
cuts:

calibrated up to 7mm
all standard cuts and free sizes
rough:

generally available in clean material to cut sizes 6mm and under; bigger sizes occasionally available - please contact us for current stock
mining:

found in zambia, namibia, tanzania, kenya and many other localities worldwide 
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info@colorfirst.com
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