56588
Estimated to have produced over 11 million carats in 2013 , with an average price of $ 145 / carat , the Orapa mine was estimated to produce over $ 1.6 billion worth of diamonds in 2013 .
 Orapa
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Orapa