Compact and Portable: Designed for travel, this pocket spectroscope device is small and portable. It easily fits into a pocket or bag, making it convenient for use at gem markets, during vacations, or at trade shows. Unparalleled Construction: Made from aluminum alloy, this pocket diffraction spectroscope is built to last. Combined with advanced optics, it delivers reliable performance and accurate results. Axis-Specific Color: The dichroic mirror clearly displays the true color on each axis, allowing individual axis viewing. Distinguish Similar Gems: This tool helps differentiate between gems of similar color. Durable and Reliable: Crafted for durability, the device is suitable for frequent use. Color: As shown in photo Material: Aluminum alloy Note: Product appearance may vary slightly between batches, but this does not affect functionality. Package Contents: 1 x Identification instrument 1 x Storage bag Note: Light reflection and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance: +/- 1-3 cm.