Posted on November 1, 2019 by John J. Bradshaw, GIA GG

INTRODUCTION Sapphirine is a mineral species, magnesium aluminum silicate, with the formula (Mg,Al)8(Al,Si)6O20. It wasdiscovered by K.L. Giesecke in Fiskenaesset, Greenland in August of 1890. The name might cause confusion as it seems to indicate that…

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