Shenzhen Fable Jewellery Technology Co., Ltd.
Shenzhen Fable Jewellery Technology Co., Ltd. We are making it better！
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White Grading board for Diamond Color Grading FDB-1A
Description:
1. Multiple V-shaped grooves to reduce the reflection on the diamond surface;
2. Various specifications of round holes are convenient for measuring thermal conductivity and can assist the use of diamond grading lamps;
External dimensions:
| Application | Diamond Color Grading |
| Size | 21.5cm*10.6cm |
| Weight | 485g |
| Shape | Rectangle |
| Color | White |
| Type | Auxiliary accessories |
