Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_2493389_1 ( calcium__mg_ VARCHAR, fat__g_ VARCHAR )

### Question ###
Name the calcium for fat being 6.5

### Accurate SQL ###

SELECT calcium__mg_ FROM table_2493389_1 WHERE fat__g_ = "6.5"