Practical Gemology refers to the application of the knowledge of characteristics and properties of gemstones in identification or separation of synthetics and imitations. Diamond grading is included in practical gemology.
In November 1919 and January 1920, in what notoriously became known as the âPalmer Raids,â Attorney General Mitchell Palmer began rounding up and deporting so-called radicals. Thousands of people were arrested without warrants and without regard to constitutional protections against unlawful search and seizure.
After the four killers returned, it is believed that Nancy and Charlie drove to the Tate house and inspected the crime scene. Nancy was arrested with the family in both the August 16, 1969 Spahn's Ranch and October 10, 1969 Barker Ranch raids. During police questioning, she stayed loyal to the family, and maintained that she knew nothing about the murders.