Particle Strength:
We test the 'friability' of each diamond grade at room temperature and at 1100c (which is higher than typical manufacturing processes). The strength of each saw grit product is then ranked relative to the other diamond grits within the respective product range.

Particle Shape/Crystallinity:
This Indicator gives a ranking based on the proportion of crystalline particles within each product. A particle is described as crystalline when it displays features such as a regular defined shape, smooth faces and a sharp edge definition. These particles are commonly associated with high strength saw grit and generally exhibit predictable breakdown characteristics in use. Particles described as less crystalline are more irregular in shape, with rough faces and less well defined edges. A specific piece of equipment is used in this analysis and 5 key characteristics are measured in each test.

Particle Compression Fracture Strength:
The single crystal static fracture strength tester combines a special microscope for size, shape and position measurement and the fracture force measurement in one device. From size and fracture force of the individual stones the individual fracture strength is calculated. High CFS correlates strongly with high strength, crystalline grades of diamond.

Particle Size:
All our products must fall within FEPA standards and are measured using both a vibratory sieve and ro-tap system.