Agate is characterized by a number of physical and chemical properties:

Physical properties

• The shape is subtle crystallization
• Silicate minerals group
  
• White scratching
• Hardness 7
• Colorless/white/yellow/gray/brown/blue/red
• Translucent / Opaque
• Luster vitreous/waxy

Chemical properties

• Density 2.7
• Hexagonal / triple crystal system
• The chemical formula is silicon oxide