Aug 12, 2021
Chiastolite
Chiastolite Chiastolite or Cross Stone is a rare variety of Andalusite. Chiastolite name comes from the Greek Chiastos (cross marked). Its black cross inclusion of Graphite and Carbon invariably goes through the entire stone and there are several assumptions on how it was formed, and why it has a cross shape. The first representation of a Chiastolite appears in Laet’s 1648 publication, De Gemmis…
View On WordPress