HPHT Diamond Plate


1mm thick diamond plate, high nitrogen content, grown via a high pressure, high temperature (HPHT) process.

SKU: HPHT Category:


Single crystal diamond plates grown via HPHT

Typical Birefringence (Strain) Pattern

Yellow color is due to nitrogen content at the ppm level.

Diamond grown by the high pressure/high temperature (HPHT) process is generally preferred when:

  • Mechanical strength is of primary importance
  • Dimensions needed are similar in all dimensions (blocky, not wafer-like)
  • Low strain is of high importance
  • Generally easier to polish (due to lower incidence of lattice straining features)

The downsides to the HPHT process include:

  • Smaller lateral dimensions available
  • Metallic inclusions are common, not always visible
  • Nitrogen impurities affect color and electrical performance

*See Diamond Properties pages for measurement methodology.

Additional information

Dimensions 5 × 5 × 1 mm
Lead time for quantities in excess of stock

3 weeks

Lateral Dimensions

3x3mm, 5x5mm