Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness.
It's beautiful, worth every penny. I would buy another one in a second if needed. I was a bit leery because of the price but the item was so nice when I got to hold it in my hands. Sometimes it's hard to tell about an item just by looking at the pictures on Amazon.