Pearl Classification: The GIA 7 Pearl Value Factors
2018年1月26日 · This wall chart is intended as a comprehensive but simplified overview of how GIA gemologists classify pearls using the GIA 7 Pearl Value Factors system (see figure 2, for example).
How Much Are Pearls Worth? The Definitive Guide to Value
In general, there’re 7 factors that affect the pearl value: shape, size, colour, lustre, surface quality, nacre quality and matching. Like the 4Cs of diamond valuation, the pearl’s 7 value factors are created by the Gemological Institute of America (GIA) to standardise pearl grading systems.
How Much Are Pearls Worth? The Ultimate Guide to Valuing Pearl …
2024年4月6日 · When evaluating any pearl, jewelers and gemologists look at 6 key factors to determine its overall quality grade and value: Size – In general, larger pearls are more valuable, all other factors being equal. Pearls are measured in millimeters and range from under 1mm seed pearls to over 20mm South Sea pearls.
each of the seven value factors—size, shape, color, luster, surface, nacre, and matching—as well as dig-ital images to illustrate various examples. Pearls fall into one of two varieties: nacreous (re-sembling mother-of-pearl with lustrous nacre) and non …
Pearl Value, Price, and Jewelry Information - Gem Society
All pearls are graded based on their luster, nacre thickness, shape, surface quality, color, and size. These properties are explained below. However, for more detailed information on how to evaluate pearl value, consult our pearl buying guide and cultured pearl appraisal guide.
Pearl Quality 101 – How GIA Examines and Classifies Pearls - GIA …
2016年6月28日 · If pearls are your gemstone of choice, you’ll want to learn more about GIA’s 7 Pearl Value Factors™ – the criteria GIA uses to classify and describe pearl quality. Read on to learn about how pearl quality is determined and what you …
Pearl Grading Guide - Pearls of Joy
Pearl specialists use 7 value factors to grade and appraise pearls. These are: Nacre Quality; Luster; Surface Quality; Size; Shape; Origin; Color/Overtone Strength; Below we’ll look at each of these factors individually and how they contribute to a pearl’s overall value.
Pearl Grading: All About the A-AAA Pearl Grading Scales
Basically, the brighter, sharper and more reflective a pearl is, the more valuable it will be. Read More: What Causes Luster in a Pearl. SHAPE - generally the more perfectly round in shape a pearl is, the more rare and prized it is. However many pearl connoisseurs enjoy the unique distinctiveness of baroque pearls.
Pearl Quality Factors - GIA
The qualities that determine the overall value of a natural or cultured pearl or a piece of pearl jewelry are size, shape, color, luster, surface quality, nacre quality, and—for jewelry with two or more pearls—matching.
How Much Are Pearls Worth – A Quick Guide to ... - Pearl Wise
The value of pearls depends on several factors which impact the grading of pearls (this includes size, color, shape, luster, surface quality and type). Pearl variety has a direct bearing on the worth of pearls with South Sea pearls being the most expensive, followed by Tahitian, Akoya and freshwater pearls.