การชะละลายตะกั่วจากพลอยทับทิมที่ผ่านการเผาด้วยแก้วตะกั่ว
Nowadays, gem ruby enhancement industry in Thailand has applied heat treatment with lead glass additive to improve transparency and beautifulness of stones. However, this process has been criticized by academics such as environmentalists and gemologists, entrepreneurs as well as user, particularly o...
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| Format: | Theses and Dissertations |
| Language: | Thai |
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จุฬาลงกรณ์มหาวิทยาลัย
2013
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| Online Access: | https://digiverse.chula.ac.th/Info/item/dc:56995 |
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| Institution: | Chulalongkorn University |
| Language: | Thai |