BDM400L digital LCD Gemological microscope renovated the traditional way of microscopic observation and thoroughly resolves the fatigue for a long time working. BLM-800 is a precision microscope that is capable of inspecting diamonds, emeralds, rubies, and all other types of precious stones, it is usually used to inspect gemstones and in the design, production and repair of jewelry. This microscope is an ideal instrument for jewelers and gem stone experts.