Natural vs. Lab Created vs. Simulated Gemstones. November 29, 2005 People buying or selling gemstones should read FTC 'Guides for the Jewelry, Precious Metals, and Pewter Industries.' The following quote from...
Equipment, Books, and Courses for Testing Gems. The following courses, books and equipment are useful for testing gems. We give very approximate prices. Courses. GIA course on colored stones, followed by GIA...
SYNTHETIC SILICATE GEMS VERSUS SIMULANTS. Simulants are commonly and mistakenly sold as synthetic or ‘lab’ stones of a certain mineral species. A SYNTHETIC gem (or LAB created gem) should have the same...