Journal · Field notes
Field notes for understanding materials, comparing stones, choosing size, and caring for what you wear.
13
Green phantom quartz records repeated growth interruptions as visible internal layers. Learn how chlorite phantoms form and how to choose readable green phantom jewellery.
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14
Emerald phantom quartz is clear quartz with a visible green phantom sealed inside. Learn how growth pauses, chlorite layers and clarity create its collector value.
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15
Rutilated quartz contains rutile needles inside quartz. A material-first note on titanium dioxide inclusions, density, readability and BE. golden rutile jewellery.
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16
Amethyst is violet quartz formed through trace iron, natural radiation and time. A geology-first note on colour centres, care, safety and amethyst jewellery.
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17
Aquamarine is blue because trace iron behaves differently inside beryl. A material-first note on Fe2+, beryl, heat treatment and choosing blue crystal jewellery.
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18
Obsidian is volcanic glass, not crystal: a material formed without a lattice, made sharp by fracture and luminous through microscopic gas bubbles in gold sheen obsidian.
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19
Prehnite is a calcium aluminium silicate associated with low-temperature hydrothermal and metamorphic settings. A BE. note on colour, quality, care and jewellery.
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