Designed to transmit only deep red and yellow-green light (best obtained under strong electric light). Just hold the filter close to your eye and look at the stones. Multiple stones can be viewed at once. It is helpful with identifying a few red gems and certain blue and green stones. Can filter out mixed-in jewelry and differentiate emerald from emerald look alike. It is also useful for checking aquamarine and sapphires.
It has a glass filter. This gives better clarity, reduces distortion and provides better protection from humidity. It is also a combination of two gelatin filters that transmit only deep red and yellow/green light. As Emeralds transmit light in the deep red spectrum but absorb light in the yellow/green spectrum, this combination is the most practical. It is a useful tool to distinguish natural emerald and natural green beryl, as well as most green and blue gems.
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Specifications
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A printed user manual is already included with this item. No digital user manual or software is available.
Most new, unopened items can be returned within thirty (30) days of delivery for a full refund. If the return is due to our error—such as receiving an incorrect or defective item—we will also cover the return shipping costs.
If you request a refund, it will be issued using the original payment method within four (4) weeks after you hand the package over to the return carrier. This timeframe includes shipping transit to our facility, processing upon receipt, and the time required for the refund to be posted to your account.
WARRANTY POLICYMost of our items come with one (1) year warranty for manufacturer defects. It does not include damage caused by misuse, accidents, abuse, alterations, neglect or other external causes.
The warranty will not extend to consumables (i.e. electrodes, calibration solution, battery, index oil), accessories, cable, compact disk and/or any written document bundled with the item.
For more information, please visit our Return, Refund, and Warranty Policy page.
