These institutions are all national certification authorities, with professional equipment and qualification appraisers. When testing crystal stone, it will be tested according to its appearance, hardness, specific gravity, refractive index, fluorescence and other characteristics, and will be analyzed and judged by professional instruments.
If you need to test the crystal stone, you can contact the above institutions to make an appointment for the test time and pay the corresponding fees. At the same time, you can also refer to some basic knowledge of gem identification and conduct preliminary crystal stone identification yourself to avoid buying fake or defective products.
In a word, the detection of crystal stone needs professional instruments and qualified appraisers. It is recommended to go to a regular gem appraisal institution for testing to ensure that you can buy genuine products. At the same time, when buying gems, we should pay attention to choosing formal channels to avoid buying fakes or defective products.