Author: Gemworld International

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.

Lab Grown Diamond Price Index – 3rd Quarter 2021 Market Report

Laboratory-grown diamond acceptance continues to grow as noted by announcements such as Pandora in June going “all in” on lab grown diamonds for their fashion jewelry line, no longer using natural diamonds. The July issue of the GemGuide gives more detail on this move by Pandora in the market report by diamond correspondent Jon Phillips. As he noted, it was a brilliant PR move, focusing on ethical and sustainability concerns over mined diamonds, though we know some of these claims continue to be challenged by the natural diamond producers.