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You can indicate the icon to be used in an object's value in React by using a combination of JSX and CSS. You can create a CSS class that sets the background image to your desired icon and then apply this class to an HTML element in your JSX.

For example, let's say you have an object with a "status" property that you want to display an icon for. You could create a CSS class like this:

.status-icon {
  background-image: url('/path/to/icon.png');
  width: 16px;
  height: 16px;
  display: inline-block;
  margin-right: 5px;
}

Then, in your JSX, you could use this class to display the icon:

const myObject = { status: 'active' };

function MyComponent() {
  return (
    <div>
      <span className="status-icon"></span>
      {myObject.status}
    </div>
  );
}

In this example, the status value will be displayed next to the icon specified by the CSS class. You can adjust the CSS properties to customize the size and position of the icon as needed.