Stone Guides

Green Crystals: Prehnite, Green Phantom & Emerald Phantom

A geology-first guide to green crystals — what makes a stone green, the mineral families involved, top deposits, and how to choose a strand.

Red & Orange Crystals: Garnet, Hematoid & 6 More Explained

A geology-first guide to red and orange crystals — Fe³⁺ vs Mn vs Cr chromophores, mineral families and top deposits for warm-toned stones.

Amethyst Guide: Colour Centres, Origins, Varieties & Jewellery

A geology-first guide to amethyst — what gives quartz its purple colour, why origins vary, where the best material forms, and how to read a strand.

Green Phantom Quartz: Chlorite Inclusions, Origins & Jewellery

A geology-first guide to green phantom quartz — what the chlorite ghosts really are, how they form, where the best material comes from, and how to read a strand.

Rutilated Quartz Meaning: Needle Inclusions, Origins & Grading

What rutilated quartz actually means in mineralogy — TiO₂ needles in SiO₂, why colours vary from gold to red, where the best strands come from, and how to read one.

Moonstone Guide: Adularescence, Origins, Varieties & Jewellery

A geology-first guide to moonstone — what creates adularescence, why feldspar varieties differ, where the best material forms, and how to read a strand.

Citrine Guide: Natural vs Heated, Origins & Jewellery

A geology-first guide to citrine — what natural and heated citrine actually are, why most market material is heated amethyst, where it comes from, and how to read a strand.

Why Crystals Are Geological Treasures (Beyond the Hype)

A material-first reframe of crystals as geological treasures — what makes them rare, how they form, and why the geology is more interesting than the mythology.

How Crystal Colours Form: A Science-First Explanation

How crystal colours form — trace element substitution, electron transitions, structural colour, treatment effects, and what gives each mineral its hue.

How Crystals Form: Four Geological Paths (Igneous to Hydrothermal)

A geology-first walk through the four ways crystals form — igneous, metamorphic, sedimentary and hydrothermal — and what each path tells you about a stone.