High Quality Portable Diamond Grading Board
Negotiable /Piece
Min.Order:100 Pieces
Shenzhen Fable Jewellery Technology Co., Ltd.
High Quality Portable Diamond Grading Board
Model number: FDB-1A
Easy to put the samples;
Variety of round hole,help to test the heat conductivity;
Assist to diamond grading.
Several "V" shape groove,minimizing the surface reflection of the diamond;
Variety of round hole,convenient to test the heat conductivity;