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Contents of a Colored Stone Grading Report:

• Species and Variety
• Shape and Cut (cushion, round, etc)
• Faceting arrangement (step cut, mixed cut, cabochon, etc)
• Weight
• Physical measurements
• Color Grade
• Primary and secondary hue(s)
• Light Source
• Tonal Grade
• Clarity (using a recognized grading system)
• Cut Grade
• Brilliance grade (When applicable)
• Comments
• Enhancements: The majority of colored gemstones on the market today have been treated in some form. When the enhancement is known, the type of enhancement will be identified: e.g. fracture filling, glass impregnation, dye, bleaching, oiling, heat, diffusion, etc.
• Origin (When Identifiable)
• Phenomenon (description of phenomenon e.g. asterism (star), color change, i.e.: 6-ray star, rays sharp, bright, straight, centered etc.)
• Carvings (description, content, quality, etc.)

Sample Colored Stone Report
Click report to Enlarge

The colored stone grading report is a color and quality analysis. It lists the weight, color, clarity, dimensions, description, and any enhancements that have been performed on the stone. It also includes a photograph of your stone. This report is scientifically prepared. There is no ownership or value assigned to the colored stone in the report.

Tenhagen Gemological Labratory, Inc.

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