The Jonker, originally weighed 142.9 carats, cut with 66 facets. Later the proportions were changed, to impart to it a more oblong outline and greater brilliance. The stone was also flawed, apparently. It was thus reduced to a weight of 125.35 carats, cut with 58 facets. In the opinion of many who had inspected it, Jonker I is perhaps the most perfectly cut gem in existence.