Start with identification
Colour alone is rarely sufficient to identify a stone. Careful assessment draws on suitable observations, known material properties and, where relevant, analytical methods.

Gemstones differ in composition, crystal structure, inclusions and possible treatment. Understanding a specimen requires distinguishing the identity question from wider questions about appearance, characteristics and history.
Examine gemstone identity, observable characteristics and treatment-related questions.
The suitable approach depends on the material, the intended outcome and the details agreed by the parties.
Make a service enquiryDifferent specimen forms and questions call for different considerations. The following themes help frame the discussion.
Colour alone is rarely sufficient to identify a stone. Careful assessment draws on suitable observations, known material properties and, where relevant, analytical methods.
Questions about natural versus treated material, synthesis and geographic origin are distinct. Not every stone or technique allows every question to be resolved conclusively.
A useful written description identifies the specimen and separates direct observations from further interpretations. That distinction helps people understand what a finding actually supports.

A few useful details can make your first enquiry much more focused.
Describe the material, the service of interest and any supporting information.