Hold It to the Light

A beginner's guide to crystals that shows you the real stone, tells you how to check it, and keeps fact and tradition on separate lines.

You have a stone, or a handful of them, and you are not sure what they are. You do not know whether the turquoise is turquoise or dyed howlite, whether the citrine was ever citrine, or why the amethyst on the windowsill is going pale. This book starts from nothing and answers those questions with real photographs and simple tests you can do at the kitchen table.

It also tells you what people have believed about each stone, from Roman writers to today's crystal guides, and is honest about which parts are tradition and which are tested fact. It does not sneer at either.

What is inside

• Start here. What a crystal actually is (mineral, variety, rock or natural glass, and why that decides how you treat it), how the book separates checked fact from tradition, and a colour finder that sends you to the right page.
• Part 1: Learn to look. Six things to notice in any stone; the shapes you will be sold; hardness on the Mohs scale, with the thirty stones placed on it; and six safe tests (light, streak, scratch, magnet, dye and fizz), each with a worked example. It ends with a market-stall bag of five 'crystals' identified one test at a time.
• Part 2: The thirty stones. One page each, with real photographs of the stone (usually rough and as you will buy it): what it is made of, its hardness, crystal shape, what gives it colour and where its name comes from; the usual copies and treatments and how to tell; care verdicts for water, light and heat, and handling; its history and modern meaning, and where that meaning probably came from; and one thing to try with your own stone.
• Part 3: Real, treated or fake. The words on the label (heated, dyed, stabilised, reconstituted, coated, synthetic, imitation) explained, then side-by-side comparisons: natural citrine and heated amethyst, turquoise and dyed howlite, natural and dyed agate, opalite and goldstone glass, coated 'aura' quartz and man-made 'magnetic hematite'. Plus the questions to ask a seller.
• Part 4: Keep them safe. A one-page care chart for all thirty stones, what light, heat and water actually do (including which stones dissolve, which fade and which slowly turn to acid in damp air), how to clean and store them, and safety: which stones must never go in drinking water.
• Part 5: The tradition, honestly. Where the meanings came from, what a fair test of 'crystal power' found, which cleansing methods harm which stones, how to choose a stone and an intention, a five-minute looking practice, a two-week plan and your first five stones.
• At the back: a printable collection log, a glossary and sources.

The thirty stones

Clear quartz, selenite, howlite, moonstone, amethyst, lepidolite, fluorite, rose quartz, rhodonite, red jasper, garnet, carnelian, citrine, orange calcite, tiger's eye, smoky quartz, green aventurine, malachite, amazonite, moss agate, lapis lazuli, sodalite, turquoise, blue lace agate, aquamarine, black tourmaline, obsidian, hematite, pyrite and labradorite.

What you download

• Hold It to the Light (75 pages, PDF, US Letter, in colour, with bookmarks).
• Print Pages (8 pages, PDF): the colour finder, the test kit, the six tests in order, the care chart, the cleansing safety table, the two-week plan and the collection log, pulled out to print for your shelf or kit box.

Good to know

• Every physical fact (what a stone is made of, its hardness, what water, light and heat do to it, and how it is copied) was checked against mineral references: mindat.org, the Handbook of Mineralogy, the GIA and the International Gem Society. Where no source covered a point, the page says so.
• The stone photographs are real specimens from Wikimedia Commons, credited at the back.
• The tests use things most homes have: the back of a white tile, a steel nail file, a fridge magnet, a torch, cotton buds and nail-polish remover. Some tests leave a small permanent mark; the book says which, and how to test on a hidden spot.
• Stones are not medicine. The book says so plainly, and never suggests using one instead of a doctor.
• The pages are US Letter size. On A4 paper, print with “fit to page”.
• This is a PDF download. No physical book or stones are shipped.