【Usage】：A gemstone magnifying glass is a commonly used tool in gem identification. Main uses include:
1. Observe the internal characteristics (inclusions) and external features (such as acid etching reticulation in jadeite B-grade products) of the gemstone magnified.
2. A tool essential for diamond grading, used for grading the clarity and evaluating the cut of diamonds;
3. Due to its compactness and portability, it is widely used in the jewelry, printing, and textile industries.