Use modules.

imports/Spectral/Component/MaterialIcon.qml

@@ -0,0 +1,18 @@
+import QtQuick 2.9
+import QtQuick.Controls 2.2
+import QtQuick.Layouts 1.3
+
+import Spectral.Setting 0.1
+import Spectral.Font 0.1
+
+Text {
+    property alias icon: materialLabel.text
+
+    id: materialLabel
+
+    color: MSettings.darkTheme ? "white" : "dark"
+    font.pointSize: 16
+    font.family: MaterialFont.name
+    horizontalAlignment: Text.AlignHCenter
+    verticalAlignment: Text.AlignVCenter
+}