The value of this semi-precious stone is determined by a combination of factors, including quality, color, cut, and carat weight. Deep, uniform, “royal” blue with minimal pyrite inclusions is the most prized. A cabochon cut, often used for this opaque gemstone, can further enhance its value, as can a larger carat weight, assuming consistent quality throughout the stone.
Historically, this vibrant blue mineral has been treasured for its intense color. Used ornamentally and in jewelry since antiquity, it was ground into pigment for ultramarine, a paint coveted by Renaissance artists. This historical significance, combined with its relative rarity and enduring appeal, contributes to its continuing value in modern markets. Understanding the factors impacting price empowers buyers to make informed decisions.
