*NEW* DRC J-Secure+ templates The responsive touch screen interface

The responsive touch screen interface makes operation simple and efficient

and underground operations and a good discussion of diamond sorting

More than 275 diamond colours classified

Professional gem hunters and writers share first-hand accounts

Il est complété par un index avec la définition des termes techniques utilisés dans l'ouvrage

*NEW* DRC J-Secure+ templates The responsive touch screen interfaceJ Secure+ is the first of its kind instrument which identifies lab grown synthetic diamonds in studded jewelry as well as loose diamonds and performs effectively with practically all sizes and shapes of diamonds. It is an ideal tool to directly detect lab grown synthetics, grown by CVD HPHT methods.