GSTK-44 Foldable Chelsea Jadelite Filter for Gem Emerald Gemological Testing Jeweler Tool

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It is an essential device in identifying colored stones. While it was originally intended to rapidly differentiate between genuine Emeralds and the pastes and doublets which resemb le them, it also is a valuable aid in identifying other colored stones, as well. Designed to transmit only deep red and yellow-green light. Chelsea is definitely a helpful tool in identifying certain red, blue and green stones. With Chelsea filters, you can differentiate the genuine emeralds from the fake once, as well as checking the authenticity of aquamarine and sapphires with comfort and ease. Features: Equipped with a Glass Filter Reduces distortion and provides better protection from humidity Heavy Duty, reliable and transportable Specifications: Filter Diameter: 20mm Body: Made of metal Set Includes: 1 x Chelsea Filter 1 x Synthetic Leather Carry Case Show more