| Any fluorescence under ultraviolet light may also provide clues to the identity and status of a gemstone. |
| He said there should be a deliberate policy to compel gemstone companies to sell part of their produce to local jewellers. |
| For instance, exporters of rough gemstones should start exporting finished gemstone products like rings and other jewellery, he said. |
| Gem candescence is an optical quality that makes a gemstone look like a brilliant drop of liquid color. |
| In addition to metals, Russia developed an extensive gemstone trade by importing stones into the country along the major trade routes. |
| Attractive gemstone paintings, which use garnet, turquoise, yellow agate and red jasper, from Agra catch the attention of visitors. |
