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grey
tanzanite  



primary source in merelani, tanzania

colors available:

violet-blue
blue
purple
purple-blue
family/species:

zoisite
properties:

RI=1.691-1.704 DR
SG=3.30 (+/-0.10)
hardness=6-7
note: suitable for use in jewelry but not recommended for rings that will be used frequently or that have unprotected settings

treatments:

almost always enhanced by heat (see policy on treatment disclosure)
important information

smaller stones of intense color are rarer than larger stones of the same color
note: ultrasonic cleaners can harm stones
cuts:

free sizes and calibrated in standard cuts
rough:

rough available by order only - please contact us for details
mining:

found primarily in Merelani, northern Tanzania and as a secondary product of tsavorite mining in southern Kenya view photo gallery

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