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Color zoning in watermelon tourmaline
2023
Instituto Gemológico Español (IGE)
Madrid, Spain
In addition to solids and fluids, growth lines are also considered syngenetic inclusions. They are stretch marks or banded areas produced by changes in the mother solution or in the crystallization conditions.
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Details
- Title: Color zoning in watermelon tourmaline
- Date: 2023
- Location: Madrid, Spain
- Type: Photograph
- Medium: Natural gemstone
- Photograph: Ana de Bustos | Instituto Gemológico Español
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