The Two Primary Growth Technologies
| Feature | HPHT (High Pressure High Temp) | CVD (Chemical Vapor Deposition) |
|---|---|---|
| Growth Method | Mimics Earth's crust (Presses) | Mimics interstellar gas clouds (Vacuum) |
| Crystal Shape | Cubo-octahedral (14 directions) | Cubic (1 direction - vertical) |
| Common Defects | Blue Nuance (Boron), Metallic Inclusions | Brown Tint, Striations (Graining) |
| Best For | Small sizes, D Color | Large sizes, High Clarity |
For a retailer, the distinction is becoming less relevant as technology improves. The key is to check for specific defects: Blue Nuance in HPHT and Brown Tint/Grain lines in CVD. At Kunlun Growth, we filter out both to ensure premium supply.