| Journal Call no. | HD9747.A8J48 |
|---|---|
| Article Title | Natural was diffusion-treated. |
| Is Part Of | Jewellery news Asia ; no.118, Jun 1994, p.74. |
| Abstract | Two lots of corundum offered as good quality natural rubies to two gemstone wholesalers in Hong Kong were identified as diffusion-treated red corundum by Valuation Services Ltd in Hong Kong. |