Question

what is meaning of lustre?

Answer 1

shiny surface ...........

Answer 2

Thanks for question ❕

$\bf{lusture \: }$
means a soft glow or shiny surface which
$\bf{reflect}$
light properly !

Commonly lusture we can see in Metal

Like
$\bf{silver}$
Or in scientifically

Lusture is a thin coating containing unoxidized metal which gives an iridescent glaze to ceramics.

Hopes that information will u !