Four Treasures Reference Database
Record No. 7446
![Highlights at the Gem Trade Lab in New York: [Sapphires: unusual spectra, yellow-sapphire fading, 12-rayed blue star]](/media/publications/1439595017 IMG - COVER SU59.jpg "Highlights at the Gem Trade Lab in New York: [Sapphires: unusual spectra, yellow-sapphire fading, 12-rayed blue star]")
Highlights at the Gem Trade Lab in New York: [Sapphires: unusual spectra, yellow-sapphire fading, 12-rayed blue star]
Sapphires: unusual spectra, yellow-sapphire fading, 12-rayed blue star
Journal Article
Crowningshield, G.R. (1959) Highlights at the Gem Trade Lab in New York: [Sapphires: unusual spectra, yellow-sapphire fading, 12-rayed blue star]. Gems & Gemology, Vol. 9, No. 10, Summer, p. 294.
ISBN/ISSN: 0016626X | Sinkankas/Born No.: NIS/NIB | RWHL
corundum, properties.3, color.4, treatments.6, gems