Pocket Diffraction Grating Spectroscope 

Pocket Diffraction Grating Spectroscope, with fixed slit & fixed focus. Allows you to read a gemstone's spectral signature.

The spectroscope is used to analyze light passing through a stone. White light is a combination of all the colors of the visible spectrum: red, orange, yellow, green, blue, indigo, and violet. This is the rainbow we see when light travels through a prism. When white light travels though a stone, one or more of the wavelengths that produce color are absorbed by the gem. The colors that are NOT absorbed are the colors seen when we look at the stone.

The wavelengths that are absorbed by the stone are seen in the spectroscope as vertical black lines in the spectrum. Each stone has a unique absorption spectrum (like a fingerprint of the stone) When identifying a stone we look for a spectrum that is characteristic for that stone.

It helps in separating ruby (chrome) against red or pink sapphire (iron), distinguishing the naturally colored diamonds from those that have been irradiated and identifying natural stones from synthetics by the stone's selective absorption of certain wavelengths. This handheld instrument can be use on loose or mounted stone and considered as the one of the most important tools in identifying gemstones.

Key Features:

•       Heavy-duty and lightweight with its aluminum construction
•       Precise, Easy and very convenient to use
•       Durable, built to last long
•       A top quality instrument giving a brilliant spectrum
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Specifications:

• Length: 55mm 
• Diameter: 15 mm
•  Material: Aluminum (Heavy Duty)
• Inside Instruction: Diffraction Type

Warranty: 1 years warranty

Accessory included:

• Leather Carry Pouch
• Stylish Packaging box

This photo show some spectrum of some common stones and photo for illustration purpose only *** 

Spectroscope Buying Guide

In gemology, there are two different types of spectroscopes,  each with its own characteristics.

1. Diffraction grating spectroscope

The diffraction grating spectroscope is based on the principle of diffraction. Light enters through a narrow slit and is then diffracted by a thin film of diffraction grating material. This produces a linear spectrum image with a generally larger view of the red part than a prism spectroscope. 

·         Inside the diffraction grating spectroscope

2.  Prism Spectroscope

The prism spectroscope is based on dispersion. The light enters through a narrow slit and is then dispersed through a series of prisms. These models are generally more expensive than their diffraction type cousins. Because prism spectroscopes are based on dispersion, the blue area of the spectrum is more spread out and the red parts are more condensed than the diffraction grating types.

·         Inside the prism spectroscope

                                                                                                                   

 In conclusion, prism type is better than diffraction type, because it has a larger and more clear image.

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 details: 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 I Intl' Registered Air Mail or Air Parcel with a tracking number. We can send by Express delivery, but need extra charges.  

 

Shipping times: All items will be shipped within 48-72 business hours upon receipt of payment (except Saturday and Sunday).

 

By express, it takes about 5-7 days to arrive. By Registered Air Mail, it takes 10-25 days to arrive (Eastern Europe, the Middle East, South America takes longer time). 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.

 

Hongkong Post Air Mail/Parcel, track here: http://app3.hongkongpost.com/CGI/mt/enquiry.jsp

Tax: We are unable to take any responsibility for any custom duty or import tax. But we will write lower value on package.

Aftersales:

12 months Warranty. Buy with confidence!

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:

 

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3) Contact us by email before you leave any negative or neutral feedback, we will deal with you to solve the problems as soon as possible.

 

Other policies:

 

Serious Buyer Only! Please place bid only if you agree with all the terms.