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8 Cards in this Set

  • Front
  • Back
Conchoidal Fracture
curved & ridged, from surface inward
Crazing
tiny fractures when opal loses H2O
Findings
small components to make or repair jewelry
Shank
part of ring that encircles finger
Steam Cleaner
high-pressure steam
Take-in
procedure for receiving jewelry for repair, appraisal, cleaning
Thermal Shock
sudden extreme temperature changes
Ultrasonic Cleaner
high-frequency sound waves in liquid solution