What is the Mohs hardness scale and how do gemologists use it? What is the significance of clarity characteristics in diamonds and colored stones?

May 1, 2013 ... EGL USA makes no warranty, representation or guaranty that the Information may be relied on for any reason, that the Information will be ... GIA tests every diamond submitted to establish its authenticity as a diamond and whether it's been subjected to treatments. GIA reports provide a full ... The transparent overlay chart gives the name of the color. Gem Crown and Supplemental Book. That will contain usage information along with extensive grading ... The Smithsonian Institution does not offer monetary evaluations. We have, however, compiled the following information which we trust will be helpful. Antiques, ... Jan 20, 2017 ... I hope this information will help answer your question about diamond value. ... Do not trust the gemologists at Crater of diamonds they are ... In truth, becoming a good gemologist will take you a lifetime. Because the study of gemology covers such a vast field of information that regardless of how ... If there are no records or adequate documentation available that provide such information, an appraisal will likely be necessary. How can I protect myself from ... Jan 24, 2015 ... There is very little information online from former students of the Gemological Institute of America (GIA). What were the pros? May 9, 2020 ... We will not use or share your information with anyone except as described in this Privacy Policy. We use your Personal Information for providing ... In addition, we will collect certain personal information if you send questions or comments to us via email. Likewise, if other users or third parties send us ...