The value of a pearl varies widely. While there is no standardized grading system for pearl quality, there are a number of factors that help determine the value of a pearl, including pearl type, ขนาด, รูปร่าง, สี, nacre quality and luster—plus its rarity and weight (for natural pearls) or size (for cultured pearls).
Other factors for assessing the quality of pearl jewelry is how well the pearls match from one to the next. ตัวอย่างเช่น, it can take years to produce a strand of South Sea pearls that are all the same millimeter in size, shape and color, which is why they command a high price.
Types of Pearls and Their Price Points
Natural pearls will always be the most expensive because they are so rare. In the world of cultured pearls, are the most valuable because of their large size and the fact that they are very difficult to grow. The most highly prized colors of South Sea pearls are golden or pure white. แต่, they also come in other colors, including silver and blue with green overtones.