First described by the ancient Greeks, the Golden Ratio (numerically: 1.618) refers to a formula of proportions that have been purported to identify the most mathematically perfect visage.

British cosmetic surgeon Dr. Julian De Silva shared his rationale for declaring Heard’s face exactly 91.85% close to perfect — about as good as it gets — by using digital facial-mapping technology.

British cosmetic surgeon Dr. Julian De Silva used facial-mapping technology to find that Amber Heard’s face is 91.85% close to perfect, according to the Golden Ratio.Gamma-Rapho via Getty ImagesSignified by the Greek letter phi (Φ), the Golden Ratio is calculated as 1.618 — which is demonstrated in this mathematically perfect spiral shape.Getty Images/iStockphotoSEE ALSO

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The Golden Ratio, alternatively signified by the Greek letter phi (Φ), can be observed in all manner of life and design. And the closer the proportions of any given object are to phi, the more perfectly balanced they appear.

De Silva analyzed 12 points on Heard’s face — using a red carpet image from 2016 — to measure between her eyes, nose, lips, chin and overall head to get the nearly 92% score.

“The Greeks discovered that the ratio occurs everywhere in nature, and for thousands of years it has been thought to hold the secret formula of the world’s most beautiful faces,” the doctor told US Weekly in 2016.

“The phi ratio of 1.618 has long been thought to hold the secret for beauty, but now with the computer mapping, we can calculate how it applies to real women,” he added.

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De Silva, who runs the Centre for Advanced Facial Cosmetic & Plastic Surgery in London, has applied the same formula to countless well-known beauties. According to his research, Kim Kardashian has the most perfect eyebrows in the industry; Emily Ratajkowski has the most enviable lips; Kate Moss has the right forehead; and Scarlett Johansson has the most fetching eyes.

But it’s Bella Hadid who scored highest of them all overall, with 94.35%, followed by Beyoncé (92.44%), Heard and, in fourth place, Ariana Grande (91.81%).

As for the fellas, Robert Pattinson is the “phi”-nest of all, inching just above Heard’s score at 92.15%.