For decades, milky whitish sapphires from Sri Lanka known as geudas were heated at a high temperature to produce superb blue colors. However, this process can also turn geudas into fine yellow and orange gems, such as this 3.60-ct specimen. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Orange Sapphire, 3.60 ct Faceted, Heat-Treated from Sri Lanka
For decades, milky whitish sapphires from Sri Lanka known as geudas were heated at a high temperature to produce superb blue colors. However, this process can also turn geudas into fine yellow and orange gems, such as this 3.60-ct specimen. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Article: Sapphire Value, Price, and Jewelry Information
Credit: Joel E. Arem, PhD, FGA
| Gemstone | Sapphire, Corundum |
| Treatments | Heat Treatment |
| Natural or man made | Natural |
| Origin | Sri Lanka |
| Carat Weight | 3.60 |
| Gem State | Faceted |
| Color | Orange |
| Transparency | Transparent |