Staircase glass and grills are two common features that can be found in modern staircase designs. 

Staircase glass refers to the use of glass panels or balustrades in place of traditional materials such as wood or metal. Glass panels can be transparent, frosted, or tinted to provide a unique look and feel to the staircase. Glass balustrades can also be combined with other materials such as metal or wood to create a more interesting and dynamic design.

Grills, on the other hand, refer to the use of metal bars or panels to create a protective barrier or decorative element on the stairs. Grills can be made from a variety of metals such as wrought iron, stainless steel, or aluminum and can be designed in intricate patterns or simple geometric shapes. They can be used to add a touch of elegance to a staircase while also providing safety and security.

In combination, glass and grills can create a stunning visual effect. For example, glass panels can be used as the main balustrade with metal grills incorporated as decorative elements or as a secondary protective barrier. The combination of the two materials can create an interesting interplay of light and shadow while adding a touch of modern sophistication to any staircase.