Analysis overview

• How are reviewers describing this item?
  stone, free, sharp, great and nice.
• Our engine has detected that Amazon has altered and removed reviews from this listing. We approximate total reviews removed to be 1.
• Previous analysis of this listing was an F grade.
• Our engine has detected product exchange for reviews. We believe these reviews are harmful for real consumers because of the inherent bias and our grade reflects that.
• Our engine has analyzed and discovered that 41.0% of the reviews are reliable.
• This product had a total of 19 reviews as of our last analysis date on Aug 15 2016.