EMERALD Rust Stain Remover for Natural Stone

Removes rust stains within 5 minutes

An innovative product designed for fast results, EMERALD is specially formulated to quickly remove common rust stains from natural stone surfaces such as brick, concrete, terra cotta, Mexican tile and other hard porous surfaces. EMERALD works upon contact with rust and completely removes rust stain within 5 minutes or less in most cases. Professional contractors, tile contractors and fabricators will find EMERALD substantially easier to use due to its gel format, which helps to cover large areas in short amounts of time, compared to other products that tend to be messy and can take a long time to successfully remove stains. EMERALD is a non- hazardous chemical that is safe to use and does not harm the environment; it is a versatile product that can be used in a variety of surfaces such as floors, countertops, vertical surfaces and exterior areas.

Directions of Use:

  1. Identify the stain type.
  2. Perform a test by applying a small amount of EMERALD. If it is a rust stain the EMERALD gel will chemically react with the rust stain causing the gel to turn to purple colour.
  3. Remove the purple colour residue with paper towel. Compare the result to the original rust stain. If the result is acceptable, proceed to stain removal for the entire area.
  4. Tape around the area of rust stain.
  5. Apply a 1/8” to 1/4” thick coat of EMERALD over the area of rust stain.
  6. Leave EMERALD to react with the rust stain for about 10 minutes.
  7. Remove the purple colour residue with paper towel.
  8. Clean the treated area with water.


  1. Always wear personal safety equipment when applying and removing the product.
  2. Perform the rust stain removal in a well-ventilated area.


Since this product’s results are subject to the nature of stone, stain and conditions during application, it is advised to first perform a demonstration to check if the results are acceptable.

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