Water Filtration Application

Garnet is used as the bottom layer in multi-media filters to improve water and waste water filtration down to 10-20 microns, increase filter run times, and decrease backwashing frequency. Its high specific gravity allows garnet to maintain a large-to-small particle grading within the filter, which provides superior performance.

  • Solids penetrate the entire bed, creating increased storage and longer filter runs
  • Low dust emissions won’t pollute the atmosphere
  • Doesn’t contaminate sea bed or disturb marine wildlife when used offshore
  • Allows you to use less, so disposal and recycling are easier than other slag abrasives

Garnet has won worldwide approval among occupational health and environmental protection authorities.


  • Mined and processed in South Africa.
  • Available in 40kg bags, 1T bulk bags, or custom order.
  • Specific gravity of 4.0.
  • Effective size of 0.3mm filters down to 10-20 microns.
  • Colour varies.
  • Light transmission properties range from gemstone-quality transparency to opaque.

Data Sheets

Water Filtration Media

Solvent Extraction         

Abrasive Grade                

General Information

Garnet is natural, inert, non-toxic, and free of silica, so it offers no known health hazards, including the danger of silicosis.

Garnet is a group of non-toxic silicate minerals with similar crystalline structures and diverse chemical compositions. It is used as the bottom layer in multi-media water filtration for varying configurations that can be used to meet specific needs.

For most municipal and industrial water supply and waste water applications, a filter bed composed of 55% low-density material, 30% medium-density material, and 15% high-density material is recommended.


Choose the packaging and shipping arrangement that best suits your needs, from small packaging to bulk bags or custom sizes made just for you. We can accommodate virtually any size, from one metric ton to thousands.


We maintain competitive pricing in an effort to win and retain your business for as long as you need us. Our goal is to meet the needs of every customer, including those with special requests and demanding production schedules.

A 15-day general turnaround for manufacturing allows us to get your compounds to you as quickly as possible, so you can keep up with the demands of your business. Contact us to get in touch with a distributor in your area if you don’t have time to wait for materials.

We currently ship to 44 countries across the world and we’re happy to ship to yours, too. The dependable and professional logistics channels we have in place make it easy to offer great pricing and service regardless of your location.

African Pegmatite

With 48 years as professionals in mining and manufacturing, we have the insight, network, and experience to offer you the very best in quality, service, and efficiency. We’ve been accredited by the ISO 9001 since 2002 and have most recently met the 2015 standard.

We aim to provide the very best materials available to our customers, and become your one-stop shop for colourants, minerals, compounds, and more. Take a look at our general water filtration page to see all the other water filtration and supplementary products we have available.

If you’d like to become a distributor of African Pegmatite products, get in touch with us and we’ll customise an arrangement with you.