Characterization of heat treated geuda gemstones for different furnace conditions using FTIR, XRD and UV–Visible spectroscopy methods
Geuda is a variety of corundum gems commonly found in Sri Lanka and Madagascar. Geuda lack colour and clarity compared to other sapphires yet has the potential to convert into quality blue sapphires by heat treatment at high temperatures. Gas-fired furnaces (GF) are commonly employed in the gem trad...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2020-12-01
|
| Series: | Solid Earth Sciences |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2451912X20300532 |