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.
One of the most celebrated Danish raids took place on the monastery on the Island of Lindesfarne off the northeast coast of Great Britain in 793. This raid became a model for Viking raids for the next 200 years and created the legend for the violence that came with them.