MASTER GRADING SET FOR DIAMONDS 　　　　　　　WORLD'S FIRST MASTER GRADING SET for Diamonds,　using the latest 　　　　　　　and highly advanced NANO TECHNOLOGY. 　　　　　　　D to M color, Standard International grading scale. 　　　　　　　Necessity for all Retail Shops, Diamond Dealers, Wholesalers, Brokers and Students. 　　　　　　　Life long color guaranty for exchange only. Please make sure to refer with the number 　　　　　　　on the back of the box. 　　　　　　　All 10 stones are in 5 different sizes, 2 stones of the same size are 6 colors apart and 　　　　　　　are very easy to identify.　No need of any eye glass or weighing machine. Measurement 　　　　　　　scale included. 　　　　　　　Comes in a compact, easy to handle box with clear instruction, good enough to be used 　　　　　　　even by a new student. 　　　　　　　US$ 389 per set. 　　　　　　　Further discount for the order of … 　　　　　　　10 sets 5% 　50 sets 15% 　　　　　　　Special discount for the order of 100 and 500 sets. 　　　　　　　All prices are FOB Japan 　 　　　　　　　Soliciting City or Country wide dealer and distributors, all over the world. click here click here