From the earliest times, people confused this stone—now known to be peridot—with other gems. It was one of many labeled as “topaz.” Some historians believe that Cleopatra’s famous emerald collection ...

Borg, “An unusual star peridot,” Journal of Gemmology, Vol. 17, No. 1, 1980, pp. 1–4; Summer 2009 Lab Notes, pp. 138–139). In January 2020, Tom Trozzo submitted to Stone Group Laboratories a 20.13 ct ...

It is the ‘stone age’ of a different sort now. People are increasingly taking to precious stones - both for vanity and for a dash of luck. As per gemmology, the birthstone of those born in August is ...