Red Gemstones: History, Lore and Gemology | GIA Knowledge Sessions Webinar Series

Quantifying Diamond Fluorescence and Its Visual Impact | GIA Knowledge Sessions Webinar SeriesПодробнее

Minerals Discovered and Named at GIA | GIA Knowledge Sessions Webinar SeriesПодробнее

Unusual Phenomenal Colored Stones | GIA Knowledge Sessions Webinar SeriesПодробнее

Sapphires: From Ceylon to Ethiopia | GIA Knowledge Sessions Webinar SeriesПодробнее

Green Gemstones: History, Lore and Gemology | GIA Knowledge Sessions Webinar SeriesПодробнее

Geology 102: Natural Processes that Form Colored Gemstones | GIA Knowledge Sessions Webinar SeriesПодробнее

The Latest Discoveries from Gems & Gemology | GIA Knowledge Sessions Webinar SeriesПодробнее

A Gemstone’s Journey through the GIA Laboratory | GIA Knowledge Sessions Webinar SeriesПодробнее

Understanding the Origin of Natural Diamonds | GIA Knowledge Sessions Webinar SeriesПодробнее

Gemstones from the Sea | GIA Knowledge Sessions Webinar SeriesПодробнее

The History of Engagement Rings | GIA Knowledge Sessions Webinar SeriesПодробнее

Superstitions Surrounding Gems and Jewelry | GIA Knowledge Sessions Webinar SeriesПодробнее

Gems of the Southwest | GIA Knowledge Sessions Webinar SeriesПодробнее

Natural Blue Diamonds | GIA Knowledge Sessions Webinar SeriesПодробнее

Microfeatures of Gems: Geologic Implications | GIA Knowledge Sessions Webinar SeriesПодробнее

The Sapphires of Montana | GIA Knowledge Sessions Webinar SeriesПодробнее

Natural Yellow & Orange Diamonds | GIA Knowledge Sessions Webinar SeriesПодробнее

Melee Diamond Analysis | GIA Knowledge Sessions Webinar SeriesПодробнее

Laboratory-Grown Colored Gemstones: Crystal Growth Methods | GIA Knowledge Sessions Webinar SeriesПодробнее