Diamonds andDiamond Grading Course
Diamondsfor the Retail Jeweller Course
Metals used in Jewellery Course
Essentials of Coloured Stones Course
Introduction to Tanzanite Course
Coloured StoneGrading Course
Coloured DiamondGrading Course
Provides professional users the means to efficiently determine whether a diamond is natural, synthetic (man-made) or treated (visually improved to increase the value). The tool is portable, durable and reliable.
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