Pearl Commerce and Valuation

An overview of the factors influencing the market value of cultured and natural pearls, and the elements considered when assessing their quality.

Grading and Quality Assessment

Size and Shape

Measurement conventions (millimeters) and common shapes (round, semi-round, baroque, etc.) and their influence on perceived value.

Luster and Orient

Definition of luster (surface brilliance) and orient (iridescent colors). Explanation of factors affecting these qualities, such as nacre thickness and surface quality.

Surface Quality

Assessment of blemishes, spots, and other surface imperfections. Scale of imperfection acceptance and impact on value.

Color

Common colors and their demand in the market. The role of overtone and body color in determining overall desirability and value. Influence of rarity and fashion trends.

Nacre Quality (for Cultured Pearls)

Thickness and uniformity of nacre as key indicators of durability and luster. Methods for assessing nacre quality, including candling and X-ray.

Matching (for Strands and Sets)

Importance of uniformity in size, shape, color, luster, and surface quality when evaluating a string or set. Impact of imperfections on overall value.

Origin and Type

Natural Pearls

Formation processes and relative rarity. Geographical sources and historical significance.

Cultured Pearls

Different culturing methods: Akoya, South Sea, Tahitian, Freshwater. Explanation of the processes and characteristics of each type.

Market Dynamics

Supply and Demand

Overview of factors affecting pearl availability and consumer preferences. Role of auctions and dealers in the marketplace.

Valuation Factors

Influence of brand recognition, provenance, and certification on the price. Importance of expert appraisal for accurate valuation.

Authenticity Verification

Distinguishing Real from Imitation

Techniques for identifying genuine pearls, including visual inspection, tactile tests (surface texture), and laboratory analysis.

Certifications and Appraisals

The role of gemological laboratories in authenticating and grading pearls. Understanding appraisal reports and their significance.