Emeralds are among the most challenging gemstones to authenticate. Natural stones form over millions of years under intense geological pressure, creating unique inclusion patterns known as “jardin.” Lab-grown emeralds—hydrothermal or flux-grown—mimic many natural features but always reveal differences under magnification, growth-structure analysis, and optical testing. Because treatments such as oiling and resin filling further complicate identification, inclusion analysis is the foundation of accurate emerald evaluation.
DJR Expert Guide Series, Vol. 156 — How to Evaluate Natural vs. Lab-Created Emeralds teaches the full professional method used by gemologists and appraisers to distinguish natural, treated, and synthetic emeralds. This guide covers growth structures, internal patterns, optical behavior, fluorescence, clarity enhancements, and magnification techniques essential for accurate gemstone assessment.
Inside, you’ll learn how experts:
Identify natural inclusions such as three-phase inclusions, jardin structures, fingerprints, and mineral inclusions
Recognize hydrothermal synthetics using chevron patterns, nail-head spicules, and hollow growth tubes
Identify flux-grown emeralds using flux veils, metallic platelets, and high-reflectivity inclusions
Detect clarity treatments such as oil, resin, polymer infusion, and fracture filling
Evaluate color zoning, saturation, internal reflectivity, and natural vs synthetic glow
Interpret UV fluorescence differences between natural, treated, and lab-grown emeralds
Use magnification tools including loupe, microscope, fiber-optic lighting, darkfield illumination, and immersion cells
Understand the value hierarchy across natural, treated, and synthetic emeralds
Spot common misrepresentations found in estate, wholesale, and online markets
Volume 156 provides a complete, gemologist-level inclusion-analysis system that helps collectors and jewelry owners confidently determine emerald origin, treatment level, and true market value.
Digital Download — PDF • 8 Pages • Instant Access
Emeralds are among the most challenging gemstones to authenticate. Natural stones form over millions of years under intense geological pressure, creating unique inclusion patterns known as “jardin.” Lab-grown emeralds—hydrothermal or flux-grown—mimic many natural features but always reveal differences under magnification, growth-structure analysis, and optical testing. Because treatments such as oiling and resin filling further complicate identification, inclusion analysis is the foundation of accurate emerald evaluation.
DJR Expert Guide Series, Vol. 156 — How to Evaluate Natural vs. Lab-Created Emeralds teaches the full professional method used by gemologists and appraisers to distinguish natural, treated, and synthetic emeralds. This guide covers growth structures, internal patterns, optical behavior, fluorescence, clarity enhancements, and magnification techniques essential for accurate gemstone assessment.
Inside, you’ll learn how experts:
Identify natural inclusions such as three-phase inclusions, jardin structures, fingerprints, and mineral inclusions
Recognize hydrothermal synthetics using chevron patterns, nail-head spicules, and hollow growth tubes
Identify flux-grown emeralds using flux veils, metallic platelets, and high-reflectivity inclusions
Detect clarity treatments such as oil, resin, polymer infusion, and fracture filling
Evaluate color zoning, saturation, internal reflectivity, and natural vs synthetic glow
Interpret UV fluorescence differences between natural, treated, and lab-grown emeralds
Use magnification tools including loupe, microscope, fiber-optic lighting, darkfield illumination, and immersion cells
Understand the value hierarchy across natural, treated, and synthetic emeralds
Spot common misrepresentations found in estate, wholesale, and online markets
Volume 156 provides a complete, gemologist-level inclusion-analysis system that helps collectors and jewelry owners confidently determine emerald origin, treatment level, and true market value.
Digital Download — PDF • 8 Pages • Instant Access
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