Research & News
Hemimorphite Resembling Paraíba Tourmaline
Copper in the zinc silicate known as hemimorphite creates an electric blue color similar to that of Paraíba tourmaline.
GIA Knowledge Sessions
Engage in webinars on the most diverse and pressing issues in gemology today, including gemstone origin, laboratory-grown stones and new discoveries in field gemology.
Bicolor Synthetic Sapphire
RusGems creates striking synthetic bicolor gems using the flame-fusion technique.
Bavenite in Quartz
Faceted quartz contains numerous unusual white radial inclusions identified as bavenite.
Solid Carved Dark Gray Diamond Ring
Graphite needles create the dark gray color of a most unusual solid diamond ring carved from Canadian rough.
The “Fragility of the Eternal” Kunzite: Origin, Cutting, and Identification
A master gem carver bases his latest design off a stunning stained glass window when attempting the world’s largest known cut kunzite.