Journal · Field notes
Field notes for understanding materials, comparing stones, choosing size, and caring for what you wear.
85
An honest comparison of natural citrine and heated amethyst citrine — both are quartz, both are natural in mineralogical sense, and what the labels actually mean.
Read field note →
86
A geology-first guide to rose quartz — what gives quartz its pink colour, why some pieces show asterism, where the best material forms, and how to read a...
Read field note →
87
A geology-first guide to prehnite — calcium-aluminium silicate formation, why some pieces show epidote needles, top deposits and how to read a strand.
Read field note →
88
Green phantom quartz records repeated growth interruptions as visible internal layers. Learn how chlorite phantoms form and how to choose readable green phantom jewellery.
Read field note →
89
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.
Read field note →
90
A geology-first guide to clear quartz — its lattice, why some specimens are flawless and others milky, where the best material forms, and how to read a strand.
Read field note →
91
Rutilated quartz contains rutile needles inside quartz. A material-first note on titanium dioxide inclusions, density, readability and BE. golden rutile jewellery.
Read field note →
92
A geology-first guide to garnet — the garnet group of minerals, why colour varies from red to green, top deposits and how to read a strand.
Read field note →
93
Amethyst is violet quartz formed through trace iron, natural radiation and time. A geology-first note on colour centres, care, safety and amethyst jewellery.
Read field note →
94
Aquamarine is blue because trace iron behaves differently inside beryl. A material-first note on Fe2+, beryl, heat treatment and choosing blue crystal jewellery.
Read field note →
95
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.
Read field note →
96
A geology-first comparison of gold sheen and black obsidian — what creates the metallic shimmer, how the volcanic glass differs, and which to choose.
Read field note →