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Gem Focus - September 2021

Posted on September 13, 2021 by Çiğdem Lüle, PhD, FGA, GIA GG, DGA

Meteorite collecting requires quite a specialized understanding of structures of other planetary objects and stars in our galaxy.

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Fitting A Jade Bangle

The bangle is the most popular jade jewel, but it is also the most complex to select. Next to all quality parameters, personal preferences, and budget, choosing the right size is of utmost importance. And when it comes to green and purple jadeite, perfect bangles are, as one would say, unheard of. Table 1 shows approximate retail values that currently apply for inferior to exceptional quality jade.

Cerussite

Cerussite is a mineral species, lead carbonate, with the formula PbCO3. It crystallizes in the orthorhombic system. It is an important ore of lead.

Basic Gem Testing

One-step testing is a tempting proposition; however, it requires extensive knowledge and experience to perform the minimum number of tests required for accurate and conclusive identification.