Natural green sapphire-topped doublet with a Verneuil synthetic ruby base. This image shows flattened gas bubbles in the separation plane, along with ink-spot internal diffusion from clouds of silk in the heat treated green sapphire crown.
Synthetic • Verneuil • Enhancements: None Detected (None) • Lighting Conditions: Dark Field
Photographer: Richard W. Hughes •
Image Number: R-001-3182-2 • Date Posted: 09 November 2015
Hughes, R.W. (1997) Ruby & Sapphire. Boulder, CO, RWH Publishing, 512 pp.; RWHL*.