SSEF conducts analysis of cobalt-blue spinel from a newly reported source in Tanzania
For several months already a supply of blue cobalt-bearing spinel has been appearing in the gem trade, including some stones of remarkable size -up to 40 carats- and quality.
SSEF conducts analysis of cobalt-blue spinel from a newly reported source in Tanzania
According to source of the new find is a deposit located about 20 kilometres south-east of Mahenge, Tanzania
SSEF Analyses Cobalt-Blue Spinel From New Tanzanian Source
According to information from reliable sources, the source of the new find is a deposit located about 20km south-east of Mahenge, Tanzania, which for more than 20 years has been known for its red to pinkish red spinel of exceptional quality.
A New Source in Tanzania Is Producing Cobalt-Blue Spinel
The stones come from a deposit close to Mahenge and have been on the market for several months.