“Capes” originally referred to yellow-toned diamonds that were discovered in Cape Town, South Africa. This area was known for producing a high volume of diamonds in this color range. Now “cape diamond” is used to describe any diamond in the lower end of the standard diamond color range — from about M to Z — and any lighter colored fancy yellow diamond. “Zimmies” is another provincial term originally used to mean diamonds from the Zimmi region of Sierra Leone, an area known for its high quality yellow diamonds. Now this term is used to mean any fancy colored yellow diamond with a deep, vivid yellow color.