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1. Gem Refractometer:
     a.  two ways power supply: 2x AAA batteries and world wide AC100--240V;
     b.  testing rang: 1.35-1.85;
     c.  accuracy: ≤±0.003;
     d.  appearance: grind arenaceous aluminum alloy with silver color.
     e.  2ml refractive oil. 
2. Portable Polariscope:
     a.  diameter of polaroid: 30mm;
     b.  with LED cold light;
     c.  build-in 3V button battery;
     d.  appearance: alumunum alloy with black color. 
3. Hand-held Prism Spectroscope:
    a.  with fixed focus;
    b.  with high resolution;
    c.  avoiding reflection of interference;
    d.  appearance: blank. 
4. Calcite Dichroscope:
     a.  material: excellent iceland spar;
     b.  big eyepiece and clear to read; 
     c.  appearance: blank. 
5. Gem Loupe:
     a.  size: 21mm dia.;
     b.  magnification time: 10X;
     c.  appearance: silver. 
6. Chelsea Filter:
     a.  fastness and non-gumming 
     b.  appearance: grind arenaceous aluminum alloy with black color(or white color).  
7. Gem Tweezer:
     a.  material: stainless steel;
     b.  high elastic. 
8. UV LED lamp:
      a.  3 pcs of LED;
      b.  violet color light.     
9.  Cutting Loupe:
      a.  magnification time: 5X;
      b.  shape: turriform;
      c.  appearance: silver.
10. Pen torch:
      a.  special for Jade;