Professional Jewelry Tester Identification Tool,Digital Gemstone Refractometer,refractive Index 1.300-3.000/Measurement Error: ±0.005/accuracy: 0.001,for Jewelry, Jade, Crystal
SAR 823
High Temperature Burnout Oven, Muffle Furnace, Closed Laboratory High Temperature Furnace 1150℃ Jewelry Processing Furnace Smart Temperature Display & Uniform Heating
SAR 1,978