Journal · Field notes
Field notes for understanding materials, comparing stones, choosing size, and caring for what you wear.
13
The price gap between mass-market and high-end crystal bracelets is set by six material variables: raw cost, yield, polish, sorting, origin, brand model.
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14
Fire quartz and hematoid quartz are identical — SiO₂ with iron oxide inclusions. Why the market uses two names, what the red actually is, and how to assess...
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15
How to tell black rutile (TiO₂) needles from black tourmaline (schorl) rods in quartz — visual tests, chemistry differences, and why the market confuses them.
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16
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.
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17
A geology-first comparison of gold sheen and black obsidian — what creates the metallic shimmer, how the volcanic glass differs, and which to choose.
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18
A geology-first comparison of rutilated and clear quartz — how the inclusions form, what each look offers, and how to choose between them for a strand.
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19
A geology-first comparison of amethyst and rose quartz — what gives each its colour, how the structures differ, and how to choose between them for a strand.
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