INTRODUCTION TO GEMMOLOGY There are no products in this category.

INTRODUCTION TO GEMOLOGY Gemmology, general Concepts: Introduction. Gems: natural, synthetic and imitation. Minerals and Crystals. Substance crystal clear. Introduction. Substances crystal. Amorphous substances. Symmetry: Elements and classes of symmetry. Systems crystalline. Habit. Maclas. Physical properties (I): Hardness, concept, and limitations. Scale of Mohs. Fracture and exfoliation. Weight specific. Units of weight. Methods of measurement. Advantages and disadvantages of each method. Physical properties (II) light-dependent. Introduction. Color. Transparency. Reflection. Refraction. Total Internal Reflection. The index of refraction. Refractive simple and double refraction. Measurement of the refractive index: refractometer. Dispersion. Spectroscope. Spectra of gems. Brightness, sheen, color games, opalescence, asterism, etc Chemical Properties. Crystallography, because of the different colors. How are the colors in gems of the same habit. Laboratory: Different tests with gems for observation. 3 WEEKS, 2 DAYS A WEEK OF 1 ½ HOUR OR 2 WEEKS for 2 DAYS A WEEK 2 HOURS