What is a quartz grill on microwave?

There's no such thing as a "quartz grill" on a microwave. Here's why:

* Microwaves work by heating food with electromagnetic radiation. This is fundamentally different from grilling, which uses heat from a source like charcoal, gas, or an electric heating element.

* Quartz is a material used in some electric heating elements. However, these elements wouldn't be found in a standard microwave.

What you might be thinking of:

* Microwave ovens with grilling features: Some microwaves have a built-in broiler element, which uses heat from an electric coil to brown or grill food. This element is often located above the food, similar to a traditional broiler.

* Quartz heating elements in countertop appliances: Some countertop ovens or toasters ovens use quartz heating elements for their grilling function. These are separate appliances from microwaves.

In summary: While there is no "quartz grill" on a microwave, some microwaves have broiler elements for grilling. If you're looking for a grilling appliance with a quartz heating element, you'll need to look for a countertop oven or toaster oven.