Waterjet Cutting Media: Red Garnet (GMA Waterjet Garnet ClassicCut™)

Ecological Product

In accordance with UE Regulations


  • GMA Garnet is precisely engineered to support both peak performance and longer lasting operating life of today’s highly sensitive waterjet cutting tools.
  • The unique grain hardness of GMA Garnet guarantees highest production rates and a perfect cutting edge from the first cut.
  • Consistent, accurate product sizing ensures no oversize grains, and enables steady abrasive flow with no blockages in the focusing tube.


  • Stone Cutting
  • Metalworking
  • Manufacturing
  • Aerospace
  • Automotive
  • Defense
  • Glass Cutting

Types of GMA Garnet

  • ClassicCut™ 50: High Speed Cutting. Where high performance cutting is paramount.
  • ClassicCut™ 80: The most versatile waterjet abrasive grade. Delivers the optimum balance of cutting speed and precision edging.
  • ClassicCut™ 120: High Precision Cutting. For achieving high quality edging and accuracy.

Edge GMA Garnet Grade Focusing Tube Orifice
High Speed Cutting ClassicCut™ 50
500-200 micron
0.016 - 0.018”
0.407 - 0.457 mm
Precision Edge (Industry Standard) ClassicCut™ 80
350-150 micron
0.030 - 0.040”
0.762 - 1.02mm
0.010 - 0.014”
0.254 - 0.356 mm
High Precision Edge ClassicCut™ 120
200-100 micron
0.020 - 0.030”
0.508 - 0.762mm
0.007 - 0.010”
0.178 - 0.254 mm


GMA Garnet is ideally suited for all applications including:

  • Carbon Steel
  • Stainless Steel
  • Aluminium
  • Copper
  • Granite
  • Marble
  • Glass
  • FRP
  • Carbon Fibre

Physical and Chemical Properties

Physical and Chemical Properties
Appearance Pink to red coloured free flowing sand
Odour Odourless
Odour threshold Not applicable
pH 8.0 – 9.0
Melting point Approx. 1250˚C (2282˚F)
Flash point Non-combustible
Evaporation rate Not applicable
Flammability (solid, gas) Non-flammable
Upper / lower flammability or explosive limits Non-combustible
Vapour pressure Not applicable
Vapour density Not applicable
Specific gravity 4.1
Solubility Insoluble
Radioactivity Not detectable above background levels
Hardness 7.5 – 8.0 Mohs
Particle size Average range between 0.1 – 0.6 mm
(150 mesh – 30 mesh), depending on grade
Particle shape Sub-angular
Source Alluvial
Bulk density Approx. 2.3 t/m3 (145 lbs/ft3)
Volatile organic compounds content Below detectable limits
Partition coefficient (N-octanol / water) Not applicable
Auto-ignition temperature Not applicable
Decomposition temperature Not applicable
Viscosity Not applicable

Chemical Composition

Chemical Identity Common Name CAS Number Proportion (weight %)
Fe3Al2(SiO4)3 Almandine Garnet 1302-62-1 > 96%
FeTiO3 Ilmenite 12168-52-4 < 3.5%
CaCO3 Calcium Carbonate (free) 471-34-1 < 1.0%
ZrSiO4 Zircon 14940-68-2 < 0.1%
SiO2 Crystalline Silica (free) 14808-60-7 < 0.1%

Red Garnet User Safety

Red Garnet is a safe, ecologic and stable material. It does not need special attention while handled. Wearing personal protection equipment is necessary, as well as avoiding eye contact. Storing this material does not require special conditions. All it needs is a good air ventilation in the storage space.

In case of inhalation, the affected person must be taken out, to fresh air, and kept in a comfortable position so he/she can breathe properly. If he/she has difficulties breathing, oxygen can be administered. If he/she stops breathing, CPR manoeuvres can be performed. In this case, a medical intervention is also necessary.

Avoid direct contact with the skin. If your skin entered in direct contact with this abrasive material, you must wash the affected area with clean water for 20 minutes. Use a soft soap and clean water.

In case of ingestion, a doctor’s intervention is necessary. All treatments applied to the victim must take into account the symptoms showed by that victim.

Avoid walking through the material and always wear personal protective equipment. In case of leakages, one must insulate the area on an approximately 25 meters radius in all directions. It is forbidden to spill this material in water. Please avoid dust. Use professional vacuum cleaners to clean the area.

This material comprises silicate crystals and/or quartz. According to the IARC Monographs for assessing the hazards posed by chemical substances to people, this material bears a potential risk of cancer.

GMA Waterjet Garnet & Classic Cut Advantages

Excellent performance

It provides maximum efficiency and long service life in the waterjet cutting process

High precision

Increased productivity, consistency and sharp edges

Operational efficiency

Reduces the material consumption and lowers the operating expenses

Safe supply chain

Immediate and continuous delivery with no interruptions in the supply chain

Cut accurate edge parts wisely by using the best performing abrasives for waterjet cutting!

Red Garnet Application

Auto Industry

Auto Industry

In the production of automotive components, such as body chassis or aluminum and steel parts, waterjet cutting with red garnet can be used to make precise and accurate cuts. Thus, problems associated with the thermal deformations that can occur in the thermal cutting processes are avoided. This is essential for automotive components, where the structural integrity is crucial.

Aerospace Industry

Aerospace Industry

In the production of aerospace components, advanced waterjet cutting techniques are used to cut non-ferrous or hard metals such as titanium or special alloys. In addition, composite materials such as carbon fibers or glass-reinforced thermosetting plastic are used. Red garnet waterjet cutting offers an efficient solution for cutting these materials without affecting their mechanical properties.

The renewable energy Industry

The renewable energy Industry

In the production of components for equipment used in the renewable energy industry, such as wind turbines or solar panels, water jet cutting is used to make accurate cuts in composite and metallic materials. Red garnet provides the ability to cut tough materials, helping to make energy efficient components for renewables.