These occur after the gemstone has finished growing. Examples include "fingerprints" formed by healed fractures or star effects (asterism) caused by the exsolution of rutile needles during cooling. Using the Photoatlas for Valuation and Authentication
Quickly find specific inclusions (like "horsetail" in demantoid garnet or "silk" in rubies) using keyword searches.
The pursuit of a "Photoatlas of Inclusions in Gemstones PDF" is often driven by a need for portable, high-resolution references to identify natural gems, synthetic counterparts, and treated stones. The Legacy of Gübelin and Koivula
Recognizing the "trellis-like" rutile in Burmese rubies versus the "patchy" zoning in Thai rubies.
Foundations of inclusion types and common features in popular gemstones.
Exploration of rarer gemstones and modern synthetic treatments. Why Gemologists Seek the PDF Version