Taaffeite is one of the rarest and most desirable of collector’s gemstones, which of
Taaffeite is one of the rarest and most desirable of collector’s gemstones, which often misidentified as spinel. The primary difference between spinel and taaffeite is the double refraction found in the latter and this the property we use to separate the suspect stones for further evaluation to find beautiful rare gems, like this beautiful purple 3.44-carats Taaffeite from Tunduru, Tanzania. -- source link
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