A Ruby Filter, is a small device that you look through to aid in the identification of gemstones, in particular to spot real rubies amongst gemstones that are not rubies, or vice versa.
Specifications:
- Filter Diameter: 20mm
- Body: Made of heavy metal
- Lens: Optic Glass, not the plastic like other similar price ruby filters.
Warranty: We will send you a new one for replacement within 2 years. So far we don't any customer contact us about the quality problem.
