1. Colourless glass made of almost pure silica
   - quartz glass, quartz, lechatelierite, crystal

Type of: natural glass

• joinery
• joining
• joint
• joint author
• Joint Chiefs
• Joint Chiefs of Staff
• Joint Direct Attack Munition
• joint fir
• joint hinge
• joint probability
• joint resolution
• joint return
• joint snake
• joint venture
• joint-stock company
• jointed
• jointed charlock
• jointed rush
• jointer
• jointer plane
• jointing plane
• jointly
• jointress
• jointure
• jointworm