Do all materials which have lustre conduct electricity?
There are materials with lustre that conduct electricity, but not all materials with lustre conduct electricity. The ability of a material to conduct electricity depends on its atomic structure and the availability of free electrons for the flow of electric current.

Conductivity in Materials with Lustre
- Metals: Most metals exhibit lustre and are good conductors of electricity. This is because metals have a crystalline structure that allows electrons to move freely throughout the material, facilitating the flow of electricity.
- Semiconductors: Some materials with lustre, like silicon and germanium, are semiconductors. While they have some conductivity, it is significantly lower than that of metals. Semiconductors can be manipulated to conduct electricity more effectively through processes like doping.
- Non-metals: Non-metallic materials, such as diamond or glass, can have lustre but do not conduct electricity. This is because they have a full valence shell of electrons, making it difficult for them to lose or gain electrons to become charged and carry an electric current.

Conclusion
In conclusion, not all materials with lustre conduct electricity. Metals and some semiconductors with lustre are good conductors of electricity due to their atomic structure and availability of free electrons, while non-metals with lustre do not conduct electricity efficiently. Conductivity is a crucial property to consider when selecting materials for various applications.