WE ARE DIAMOND COLOR ENHANCEMENT TURNKEY SOLUTION VETERAN:
High Pressure High Temperature (HPHT) annealing is the core technology that makes diamond color possibly permanently changed.
Guilin Guide Superhard Material Co., Ltd. is the world leader in HPHT
processing for diamond color enhancement including natural diamond and
lab grown CVD diamond. Nothing is added and nothing is removed from
diamond, just making diamond the best it could be.