Edit this paragraph to have better consistency.
In 2003, the value of trade in gold in Dubai was approximately Dh. 21 billion (US $ 5.8 billion). Trade in diamonds was approximately Dh. 25 billion.
In 2003, the value of trade in gold in Dubai was approximately Dh. 21 billion (US $ 5.8 billion), while trade in diamonds was approximately Dh. 25 billion.