I do not know what species of Kopsia is this or where it was bought but I remember seeing this variegated plant on sale somewhere recently. This particular specimen was planted in tis container for some time now but it has yet to flower.
Could it be a variegated form of the common Kopsia flavidaor the extinctKopsia singapurensis? It is definitely not Kopsia fruticosa because the latter's leaves looked smaller. I guess only time will tell.