We carry instruments to clean, grade, and test jewelry and loose stones including gold testers, jewelry cleaning supplies, moissanite & diamond testers, diamond grading equipment, gold testing kits, loupes, diamond supplies, gemological instruments.

We are a crystal\'s factory in China, manufacture and machining of the  corundum,white corundum, blue zircon, spinel, crystal materials Loose. Description: Mainly applied to ornaments industry such as jewellry,watches, instrument bearings, rings,necklaces so on. ...