A scanning device for scanning a scannable indicia in a gemstone, the scanning device including: a scanner configured to read the scannable indicia; a light source configured to illuminate the scannable indicia; and a controller communicatively coupled to the scanner to be configured to determine whether the scannable indicia is between a table and a culet of the gemstone.

A method for forming a micro-pattern on a surface of a product and a product including a micro-pattern formed by using the same are disclosed. The disclosed method for forming a micro-pattern on a surface of a product may include checking a roughness and a curvature of a surface of a product on which a micro-pattern is to be formed by scanning, polishing the surface of the product based on a result of checking the roughness and the curvature, forming a micro-pattern comprising at least one groove portion on the surface of the product, inserting a nano insert into the groove portion of the micro-pattern; and forming a protective film on the surface of the product on which the micro pattern is formed.