Since colored diamonds have been found on earth as natural colored diamonds
a lot of effort has been spent of finding nice looking colors throughout the
whole color range from violet to red. Finding and mining colored natural diamonds
- especially those with a nice and homogeneous color - are very rare and
therefore extremely expensive. A couple of 100.000 dollars up to millions of
dollars for single diamonds have been paid already.
Since quite a long time scientists, gemologists and engineers developed
processes to create a certain bandwidth of different colors applying combinations
and variations of irradiation and annealing to natural diamonds.
Color variations and market demand started to increase for color-treated natural
diamonds as well.
When processes of making synthetic diamonds have been developed and more and more
optimized a new era has been born. From a physics point of view the growth process
of lab grown HPHT diamonds is very similar to those grown deep in the earth.
For this reason HPHT diamonds are as unique as natural diamonds are. Nowadays a wide
range of good quality white and colored lab grown diamonds are on the market.
During the last few years the quality of white and colored lab grown diamonds improved
very much so the market share increased continuously.
At present nice blue, yellow, pink, purplish and green fancy colored diamonds found
their way into the jewelry market. Nice and attractive fancy red diamonds are still
missing on the world market. Most of the so called red diamonds have a secondary
color like Brown, Grey, Green.