Introduction to Gemology

ISG Journey Thru Gemology: Introduction

April 19: Study of the Refractometer Part I

Here is the ISG Journey Thru Gemology Class for April 19.



ISG Journey Thru Gemology: Introduction

April 12: Crystal Systems

Here is the ISG Journey Thru Gemology Class for April 12.




ISG Journey Thru Gemology: Introduction

March 29: Gem Identification

Here is the ISG Journey Thru Gemology Class for March 29.