We create performance materials for today's industries.

As a leading manufacturer of Abrasive Blast Media, Foundry Products, Roofing Materials and Specialty Aggregates, Green Diamond Performance Materials has lead the industry with innovation, quality, performance and unsurpassed customer support for more than 60 years.

Innovation | Quality | Performance

golf carts on road
golf carts on road

Foundry Materials

Roofing Granules



Green Diamond

History, Products & Services.

The Green Diamond Story

In 1961 the founders of Green Diamond looked upon a discarded 20-million ton mountain of nickel slag and saw not waste, but opportunity.

Green Diamond began by making construction grits and abrasive blast media.

As time passed and technology progressed, the process of refining materials became more efficient and new products were created.

Year after year, Green Diamond continued to advance at the pace of industry and to enter new markets.

By the mid-90's Green Diamond had established itself as leading manufacturer of abrasive blast media, foundry products, roofing materials and specialty aggregates.

Today, while these products remain as the central pillars of the business, Green Diamond continues to find new industries and uses for its still plentiful reserve.


Our mission is to create the best products using the industry's most advanced technology while continuing to single source from our high grade magnesium Orthosilicate reserve located in Riddle, Oregon


Green Diamond Performance Materials has diversified into many industries and has market presence both domestically and internationally. Production is handled by 3 separate facilities while head quarters remains in Riddle. From its humble beginnings of 3 employees, Green Diamond is honoured to employ over 60 people and to be a staple of the community in which it was founded.

a view of a mountain range with trees and mountains in the distance
a view of a mountain range with trees and mountains in the distance

Riddle, Oregon

The home of Green Diamond Performance Materials


  • Mill scale

  • Paint Preparation

  • Rust Removal

  • Bridge & Rig Maintenance

  • Vapour/Water blasting

  • Blast cabinets

  • Feathering

  • Aluminum

  • Stainless

  • Powder coating

Why should you use it?

  • Environmentally Friendlier

  • Cost-effective

  • No respirable free silica

  • Safe

  • Controlled profile

  • Consistency from a single source

  • Clean & low dusting

What is Green Diamond?

The Green Diamond particle is amorphous, chemically inert and contains no crystalline free silica.

From a single source reserve that exceeds 10-million tons ensuring quality, consistency and performance with every use.

& it cuts through like a Diamond

Technical Overview

Green Diamond is fused magnesium orthosilicate formed from quenched lateritic ore.