Good Price Collapsible Ruby Filter. Identification tool for assessing red and pink gemstones. Buy Now!

⭐ RIDDGEM – Checked & tested – Shipped from Sweden – no import fees within the EU ⭐

Specifications

Filter diameter: 20 mm
Main part: Made of metal
Case: Practical leather/leather imitation case
Other: On our blog, there is a very good instruction. Click the following link Use Ruby Filter (same way as Chelsea Filter)

• Application area for ruby ​​filter is a specialized screening tool used to assess red and pink gemstones.
• It is also used effectively to detect doublets, triplets and glass imitations.
• It works by letting through a very specific and selective portion of the light.
• The filter is calibrated to make minerals containing the element chromium glow (fluoresce) in an intense bright red color.
• It is therefore a powerful tool for finding, for example, synthetic rubies.
• It consists of specially colored glass and is designed to focus only on stones with a lot of chromium.