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| Main Features 1. Gemmologist tool for absorption spectrum of your collection. 2. In excellent condition, size about 5.5 cm long, 1.5cm diameter 3. Diffraction grating type 4. Light weight, easy to carry around 5. Good quality. 6. For you to identify the absorption spectrum of your gems collection. The spectroscope is an important tool of the modern gemologist. This concerns the infrared or near infrared spectroscopes. A handheld spectroscope for visible light shows the absorption lines of the elements involved in producing its color. It helps to separate ruby (chrome) against red or pink sapphire (iron) to name only one example This tool requires a good training and an appropriate light source. Colorless stones show no absorption spectrum The sunlight shows a typical absorption spectrum, the Fraunhofersche lines. Fluorescence lamps show an emission spectrum For demonstration you may examinate besides gemstones also liquids or flames colored by metal-salts. 100% Brand New We are suppliers of weighing scales from pocket scale, jewellery carat scale, high precision balance to analytic balance and calibration weights. We also offer a variety of jewellery tools and power inverters, such as diamond tester, gem filter, jewellery loupe, polariscope, dichroscope, spectroscope for jewelers, craftspeople, hobbyists and others. We have been providing our customers with the service and quality they come to expect. Payment methods: We accept Paypal Only. And we only ship to Paypal address. Before you pay, please make sure your address in PayPal matches the address you would like us to ship to. Shipping methods: We will ship by Intl' Registered Air Mail or Air Parcel. We cans send by Express delivery, but need extra charges. Shipping times: All items will be shipped within 48 business hours upon receipt of payment (except Saturday and Sunday). It takes about 10-25 days to arrive. As delivery time is highly depended on postal service and local customs/duties, please give us enough time to transit. If you do not receive your item on time, please contact us immediately for further assistance. Thank you for your understanding. Tax: We are unable to take any responsibilty for any custom duty or import tax. But we will write lower value on package. Aftersales: We will check the goods quality before shipment. If there are some unexpected problems happen, we hope to solve the problems with buyers through friendly ways. 1. If there are quality problem, buyers can submit argue within 7 days after receiving the goods, buyer must provide photos or video and other evidence to seller for identify. 2. Man-made hazards, buyers take full responsibility. 3. The buyer return the goods to us and responsible for return shipping costs, after we receive your goods, we will send you a new product, and we will pay the cost for resend. Feedback: 1) We depend on our customers' satisfactory to succeed. Therefore, your feedback is extremely important to us. 2) If you are satisfied with our items,please leave us positive feedback,we will leave a positive feedback to you later. 3) Contact us by email hengzhiyi@live.cn before you leave any negative or neutral feedback, we will deal with you to solve the problems as soon as possible. |
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4.5 out of 5
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