A Mineral Set of Hardness specimen
Negotiable /Piece
Min.Order:100 Pieces
Ningbo Huamao International Trading Co., Ltd.
A Mineral Set of Hardness specimen
1. Talc 2. Gypsum 3. Calcite 4. Fluorspar 5. Apatiteghd 6. Orthoclase 7. Quartz 8. Topaz 9. Corundum