Diamond Assortment & 4Cs – Professional Course

Formation, origin, and characteristics of diamonds

Natural diamonds and laboratory-grown diamonds

Rough and polished diamonds

Diamond terminology and industry standards

Introduction to diamond grading laboratories

Understanding diamond carat and point measurements

Carat-to-point conversion

Precision weighing techniques

Relationship between carat weight and dimensions

Weight estimation and price-per-carat concepts

Understanding cut, proportions, and symmetry

Polish and symmetry evaluation

Brilliance, fire, and scintillation

Table, depth, crown, pavilion, and girdle

Cut-quality assessment and common cut defects

Understanding the D–Z diamond color scale

Colorless, near-colorless, and tinted diamonds

Master stones and comparison techniques

Lighting and viewing conditions

Color grading practice and common errors

Understanding the FL–I clarity grading scale

Internal inclusions and external blemishes

Using a 10× loupe and microscope

Evaluating inclusion size, position, and visibility

Clarity characteristics and their impact on appearance

Sorting diamonds by carat weight and size

Assortment by color, clarity, and cut quality

Matching diamonds for pairs and jewelry sets

Parcel consistency and tolerance management

Shape, proportion, and visual matching

Diamond lot preparation and identification

Loupe, microscope, tweezers, and diamond scale

Measuring diameter, depth, and proportions

Grading reports and diamond certificates

Understanding grading terminology

Record keeping and assortment documentation

Hands-on assessment of loose diamonds

Application of the 4Cs grading principles

Identifying visible quality variations

Diamond assortment exercises and case studies

Introduction to diamond valuation factors

Final practical assessment