イベントの検索結果
Showing 0 結果 for "*"
Internal World of Aquamarine from Xinjiang
The Natural Formation and Occurrence of Green Quartz
How amethyst under certain conditions may turn green rather than the expected citrine-yellow.
Diamond with Cavities Showing Radiation Evidence
Diamond formed at incredible depth shows evidence of radioactive fluids in cavities surrounded by green fluorescence halos.
Multi-Generation Cutting Family from Idar-Oberstein
Aegirine in Poudretteite
IMA General Meeting
Finds from the Secondary Market
Dave Bindra shows some noteworthy pieces he obtained on the secondary market and shares his thoughts on the state of the colored stones market.
Artificially Induced Color in Amethyst-Citrine Quartz
A new and rather unusual gem material and possible treatments are discussed.
Jadeite Bangle with the Appearance of Polymer Treatment
Enormous South Sea Cultured Pearl Filled with Cultured Pearls
An unusually large cultured pearl was filled with multiple cultured pearls, perhaps after the emergence of an original single-bead nucleus.