DHC international Gem testing lab and Diamond Institute provides Gemology courses, Diamond Grading, Diamond testing, Diamond Grading.Consultation for Diamonds and Gemstones with us confirms international standards with our Gem Testing Lab and Diamond Testing Lab. Under DHC, we provide Diamond grading and Gemology Courses with high quality and standards in kerala. Our business philosophy is to "keep it simple". By keeping it simple we find that things just work better and we can focus more time and energy on the job in hand. We will always select the most appropriate method for your good.