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Explore the fascinating world of gemstones with this collection featuring 10 large specimens, each about 1 inch in diameter. The stones are housed in a sliding tray and come with a guide that links to online resources, including videos and games. Delve into the geological significance of each stone, such as the role of red jasper in Earth's oxygen history and the unique properties of sodalite under UV light. The collection includes diverse gemstones like onyx, tiger's eye, and amethyst, alongside insights into imitation practices in the gem industry.
Nákup knihy
Gemstones, Penny Norman
- Jazyk
- Rok vydania
- 2022
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- (pevná)
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