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GIA releases Summer edition of Gems & Gemology

GG cover GIA releases Summer edition of Gems & GemologyReading Time: 2 minutes

GIA has announced the release of the Summer 2025 edition of its quarterly journal, Gems & Gemology (G&G). This edition has much in store, including a feature article on the intriguing world of phenomenal gems. Along with G&G’s regular sections, this installment features the return of the Colored Stones Unearthed column and profiles an award-winning gem cutter.

This and every issue of G&G since 1934 is available at no cost on GIA’s website at GIA.edu/gems-gemology.

GG GIA releases Summer edition of Gems & Gemology

Summer 2025 G&G feature article:

Structures Behind the Spectacle: A Review of Optical Effects in Phenomenal Gemstones and Their Underlying Nanotextures.
Shiyun Jin, Nathan D. Renfro, Aaron C. Palke, and James E. Shigley

Provides a comprehensive summary of the special optical effects in gemstones, including opalescence, chatoyancy, asterism, schiller, and iridescence, and investigates the submicron inclusions and nanotextures in each type of phenomenal stone.

G&G’s regular features include:

  • Lab Notes highlights unusual patterns in diamonds, three large natural hollow Pinctada radiata pearls, and a pezzottaite with multiple cat’s-eyes.
  • G&G Micro-World features an anatase “dandelion” in agate, mystery pebbles in quartz, “soap bubbles” in yellow sphene, and more.
  • Colored Stones Unearthed covers the geology, mineralogy, and formation of granitic-composition pegmatites and summarizes their worldwide occurrences.
  • Gem News International provides a nacre classification update to the GIA 7 Pearl Value Factors and a report on new väyrynenite production from Nigeria.
  • In the Spotlight profiles the extraordinary life and career of gem cutter Ben Kho.

Join the conversations on GIA’s Gems & Gemology Facebook group with an online community of more than 45,000 members. Additional research articles are available at GIA.edu/gia-news-research.

The post GIA releases Summer edition of Gems & Gemology appeared first on Southern Jewelry News.



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