High Pressure High Temperature (HPHT)
                        
                            GPTKB entity
                        
                    
                Statements (21)
| Predicate | Object | 
|---|---|
| gptkbp:instanceOf | 
                                    
                                        
                                            gptkb:synthetic_diamond_production_method
                                        
                                         | 
                            
| gptkbp:alternativeTo | 
                                    
                                        
                                            
                                            chemical vapor deposition (CVD)
                                        
                                        
                                         | 
                            
| gptkbp:developedBy | 
                                    
                                        
                                            
                                            1950s
                                        
                                        
                                         | 
                            
| gptkbp:involves | 
                                    
                                        
                                            
                                            high temperature
                                        
                                        
                                         high pressure  | 
                            
| gptkbp:minimumPressure | 
                                    
                                        
                                            
                                            5-6 GPa
                                        
                                        
                                         | 
                            
| gptkbp:produces | 
                                    
                                        
                                            
                                            gem-quality diamonds
                                        
                                        
                                         industrial-grade diamonds  | 
                            
| gptkbp:requires | 
                                    
                                        
                                            
                                            carbon source
                                        
                                        
                                         metal catalyst presses  | 
                            
| gptkbp:temperature | 
                                    
                                        
                                            
                                            1300-1600°C
                                        
                                        
                                         | 
                            
| gptkbp:usedBy | 
                                    
                                        
                                            
                                            diamond manufacturers
                                        
                                        
                                         | 
                            
| gptkbp:usedFor | 
                                    
                                        
                                            
                                            color improvement of diamonds
                                        
                                        
                                         diamond enhancement synthetic diamond creation  | 
                            
| gptkbp:usedIn | 
                                    
                                        
                                            
                                            gemstone industry
                                        
                                        
                                         industrial diamond production  | 
                            
| gptkbp:bfsParent | 
                                    
                                        
                                            gptkb:Diamonds
                                        
                                         | 
                            
| gptkbp:bfsLayer | 
                                    
                                        
                                            
                                            5
                                        
                                        
                                         | 
                            
| https://www.w3.org/2000/01/rdf-schema#label | 
                                    
                                        
                                            
                                            High Pressure High Temperature (HPHT)
                                        
                                        
                                         |