7 oz,16 oz White Rock Sugar gems/ filberts are the raw cane sugar that is crystalized to form large pieces of rock sugar. Used to sweeten milk or tea.It is not as sweet as regular white granulated sugar, doesn't overwhelm the flavor of coffee or tea. It is an important part of the tea culture where a lump of rock sugar is placed at the bottom of the cup or in the mouth as unsweetened tea is drunk.