وادى الريان2020

 Precious stones                                            Gemstones are a collection of rare minerals and rocks formed over millions of years underground. Gemstones are often found near areas of runoff and in volcanic areas. How to find gemstones / Examination using a microscope, where we place the emerald stone under the lens of the microscope, and we examine the composition of the emerald stone and search for natural impurities in the stone, or contain crystal lines or cracks in the form of spectra, distinguish emerald stone from others and difficult to imitate. There are several devices that examine the original emerald or any other precious stones, such as the refractive index device and spectroscopy and others. Examining its ability to glow, after light passes through it, produces a green glow due to natural impurities in the emerald sto...