ICHA Crystal Guide

Privacy and site use

Privacy Policy

This policy explains what information may be processed when you read ICHA Crystal Guide, contact the editorial desk, or follow a link to another service.

How this affects your visit

Ordinary browsing can create technical records needed to deliver pages, maintain security, and diagnose errors. If you contact the editorial desk, the information you choose to provide is used to understand and respond to that message.

Where this policy applies

This policy applies to information processed through It does not control the privacy practices of sellers, laboratories, social platforms, embedded services, or other websites reached through external links.

A link to another service does not mean that its collection, security, or retention practices have been reviewed or accepted by this site. Check that service's own privacy notice before providing personal information.

Information that may be collected

Technical records
Internet Protocol address, browser and device type, requested pages, referring page, access time, and error or security events may be recorded by hosting and delivery systems.
Messages you send
A message may include your name, reply details, attachments, and any specimen, listing, correction, or other information you decide to include.
Browser storage
Cookies or similar storage may support essential page functions, security, preferences, or measurement where those features are enabled.

How information is used

  • Deliver pages and maintain the reliability and security of the website.
  • Reply to questions, correction reports, and other editorial messages.
  • Investigate technical problems, misuse, or suspicious traffic.
  • Understand general site use when measurement tools are active.
  • Meet applicable recordkeeping or legal obligations.

Information is kept only as long as reasonably needed for the purpose for which it was processed, including security, operational, dispute-resolution, and legal needs. Retention periods can differ by record type and service provider.

Cookies and browser choices

Essential cookies or comparable storage may be required for security and basic functionality. Other tools, if present, may store or read browser information for preferences or aggregate measurement. Browser controls can block or delete cookies, although doing so may affect functions that depend on them.

Privacy signals and cookie controls are handled according to the capabilities of the site and the services involved; a browser setting may not affect information already stored or independently processed by an external service.

Service providers and external links

Hosting, security, communications, and other technical providers may process limited information while performing services for the website. Information may also be disclosed when reasonably necessary to protect the site, investigate abuse, or comply with a valid legal requirement.

External pages and embedded features can collect information under their own terms. Review their notices before interacting with a seller listing, media embed, form, or linked service.

Policy changes

This policy may be revised when site features, service providers, or privacy practices change. The version published on this page governs future visits from the time it is posted; material changes will be stated here rather than implied through older wording.

Privacy questions

Use the editorial contact page to ask about this policy or a privacy concern. Include enough context to identify the relevant interaction, but do not send unnecessary identity documents, financial information, medical records, or account credentials.