A HPHT treated colour diamond’s greatest merit must be its retained quality of polish and other properties. In stark contrast with naturally occurring fancy colour diamonds and other coloured precious stones, HPHT treated diamonds possess a polish that outshines any other stone. This means a blue diamond will sparkle more than a sapphire and a red diamond, in turn, more than a ruby. Nor has there ever been a black gem with a polish and sparkle as beautiful as a black diamonds.
Colour diamonds produced with HPHT treatment are less valuable than natural white diamonds. This is not a result of inferior quality. Most of the diamonds used to produce coloured diamonds are simply not natural white diamonds, and hence worth less than them to begin with.
Finding high quality naturally coloured diamond is a difficult task, they are, in fact, highly valuable due to their rarity. Another advantage of using HPHT treatment to colour diamonds is the option to customize the resulting colour according to the client’s wishes, the process can even be done in an ecologically responsible manner.
The downside of this process is that only near perfectly pure or clear diamonds can be used. The stone that will receive the HPHT treatment should contain next to no inclusions, because they could lead to damage or even fracturing of the stone during the process.
As is explained in naturally coloured diamonds, diamonds that were coloured through HPHT treatment contain minor differences in crystalline structures or foreign elements that lead to the prevalence of a certain colour in the stone. This means that the available colours a given diamond can be turned into are predetermined.
High Pressure, High Temperature (HPHT) is a technique used to create fancy colour diamonds. By mimicking the natural circumstances under which a diamond is produced scientists can change a stone’s colour. This is done with the help of high pressure and temperature that influence the elements and structures inside the diamond in such a way as to change its colour. After the diamond goes through the process it is polished, this reveals its fancy new colour.
HPHT is used to develop Lab Created Diamond as well. To find out more about the production of Lab Created Diamond, click here.
HPHT treatment has been applied to diamonds for some time now. Sadly, originally the process could only be used to produce the colours yellow, green, and orange. After many new processes and techniques have been developed it has now become possible to create shades of pink and purple as well.
Pink diamond is one of the most valuable of the coloured diamonds.
If you happen to be interested in HPHT coloured diamonds from our range of precious stones, or would like to find out more, our experts are ready to help you out. E-mail us your questions at [email protected]
In addition to these diamonds we offer Lab Created fancy colour diamonds as well, for more information, click here.